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| NX70/NX700 serial communications unit (scu) user manual ( datasheet : )
important user information solid state equipment has operational ch aracteristics differing from those of electromechanical equipment. because of th ese differences, and also because of the wide variety of uses for solid state equipment, all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable. in no event will rockwell samsung automation be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment. the examples and diagrams in this manual are included solely for illustrative purposes. because of the many variables and requirements associated with any particular installation, rockwell samsung automation cannot assume responsibility or liability for actual use based on the examples and diagrams. no patent liability is assumed by rockwe ll samsung automation. with respect to use of information, circuits, equipment, or software described in this manual. reproduction of the contents of this manua l, in whole or in part, without written permission of rockwell samsun g automation. is prohibited. throughout this manual we use notes to ma ke you aware of safety considerations. warning identifies information about practices or circumstances which may lead to serious personal injury or death, property damage, or economic loss. important identifies information that is crit ical for successful application and understanding of the product. attention identifies information about practices or circumstances that can lead to minor personal injury, property damage, economic loss, or product malfunction. however, depending on circumstances, failure to follow the directions accompanyi ng this symbol may also lead to serious consequences. 3 contents 1. specifications and components ............ ............ ......... 9 scu features .................................................................................................. 9 system configuration................................................................................... 10 specifications ................................................................................................ 11 unit diagram ................................................................................................. 12 operation status display and functions .................................................... 13 dip switch settings ...................................................................................... 14 2. wiring....... .............. .............. ............. .............. .......... 17 wiring ............................................................................................................ 17 3. operations and programming examples....... ............ 19 basic operations ........................................................................................... 19 precautions for scu operation ................................................................... 20 programming ................................................................................................ 22 NX70, NX700 plc installation example...................................................... 33 plc programming examples ....................................................................... 34 troubleshooting........ ................. ................ ................ ............. ............. ......... 47 4. product dimensions and inst allation.......... .............. 51 NX700 plc product dimensions ................................................................. 51 NX70 plc product dimensions ................ ................ ............. ............. ......... 53 power unit dimensions(mm) ...................................................................... 54 4 5 safety instructions please read this manual and the related documentation thoroughly and familiarize yourself with product information, safety instructions and other directions before installing, operating, performing inspection and preventive maintenance. make sure to follow the directions correctly to ensure normal operation of the product and your safety. otherwise it may cause overheating and product warning ? if this product is used in a situation that may cause personal injury and/or significant product damage, implement safe measures such as use of fault-safe equipment. do not use this product under any conditions exposed to explosive gases. it may cause an explosion. attention make sure to use an external device when configuring the protective circuit breakers for emergencies or interlock circuits. fasten the terminal screws tightly to ensure that the cable connection is secure. incorrect cable connection may cause overheating and product malfunction. operate and keep the product under the allowed conditions directed in product specifications. otherwise it may cause overheating and product malfunction. do not disassemble or remodel the product. otherwise it may cause an electric shock or malfunction. do not touch the terminals when the power is on. otherwise it may cause an electric shock. 6 installation environment for scu (serial communication unit) attention do not install your analog conversion modules if any of the following conditions are present: ambient temperature outside the range of 0 to 55 c (32 to 131 f). direct sunlight. humidity outside the range of 30% to 85% (non- condensing). chemicals that may affect electronic parts. excessive or conductive dust, or salinity. high voltage, strong magnetic fields, or strong electromagnetic influences. direct impact and excessive vibration. attention installing the scu module on the system 1. connect a communication cable to the scu module. 2. turn on the power to the external device connected to the scu module. 3. turn on the main plc power. attention removing the scu module from the system 1. turn off the main plc power. 2. turn off the power to the external device connected to the scu module. 3. remove the communication cable. 7 attention preventing scu module malfunctions be sure to power off the plc system before installing or removing an scu module. ensure that the scu module is secured onto the backplane before operating it. be cautious of metal chips when wiring for the scu module. metal chips and debris that fall into the module can cause damage. do not touch with your hand the connector on the bottom of the module which is used to connect to the backplane . otherwise, it can cause connection fault and static electrical discharges. do not drop or impose impact to the scu module. it can cause damage because the housing is made of injection-molded plastics. attention preventing plc system malfunctions use an isolation transformer and line filter on the incoming power to the plc when there is equipment using or producing high current, high voltage, or large magnetic fields in the vicinity. use analog sensor that meets the rated specifications for module connection. otherwise, it may cause operation errors. separate the main plc power line ground from all other power grounds. always use class 3 grounding. do not exceed the current and power rating of the external 24 vdc provided by the plc power supply. avoid system faults due to programming errors by reading and fully understanding this system manual and the plc instruction set. perform regular preventive maintenance on installed systems, checking devices and wiring for potential breakdowns and failures. 8 9 1 specifications and components exchange data with rs232c or rs485 communication devices, such as barcode reader (rs232c) and network inverter (rs458). ascii and hex (binary) data transfer is enabled with ladder program. (scu unit = the existing features of sdu unit + 485 communication) scu features 1. two channels are implemented on a single unit (rs232c, rs485 selectable). 2. data input/output with simple sequence instructions. use plc advanced instruction read to read data from the scu, and write to write data to the scu. cpu unit and scu will handle the task with shared memory, so there is no need for writing complicated programs. 3. scu unit is equipped with rs-485 network feature, added to the existing n-series sdu module features, expanding its scope of usage. 4. rs232c or rs485 communication network is available. data input/output with rs232 devices: connect to and exchange data with devices like idx display, measurement instrument, barcode reader, and printer. data input/ output with rs485 devices: connect through network to temperature controller, network inverter, and network servo. 5. unlimited mounting in plc slots, 500 byte transmission capability. NX70 pcl scu unit (NX70-scu) NX700 pcl scu unit (nx-scu) read data with the advanced instruction, read write data with the advanced instruction, 10 6. both ascii and hex (binary) can be used as transmission code. 7. end code can be configured freely with plc ladder instructions. system configuration using rs232c communication using rs485c communication you can connect rs232c device/rs485 network device to each rs232c/rs485 (ch1, ch2) channel. nx series scu can be mounted anywhere you want regardless of whether the backplane is base or expansion. the number of scu mounting is not limited. in addition to this manual, please refer to system manual and programming manual for the plc when using scu. note barcode reader id card printer measurement instrument rs-232c cable rs-485 communication inverter network rs-485 communication temperature controller network 11 specifications general specifications performance specifications item specifications te m p e r a t u r e operating 0 c to +55 c (32 f to 131 f) storage -25 c to +70 c (-13 f to 158 f) humidity operating 30 to 85% rh (non-condensing) storage 30 to 85% rh (non-condensing) withstand voltage 500 v ac for 1 minute between i/o terminal (dc) and frame ground (power unit) insulation resistance 100 m ? or more at 500 mega v dc between i/o terminal (dc) and frame ground (power unit) vibration immunity 10 to 55hz, 1 cycle/minute: double amplitude of 0.75 mm, 10 minutes on 3 axis (x,y, z) shock immunity peak acceleration and duration 15g/11 ms, 3 times in each x, y, z direction noise immunity 1500 vp-p with 50ns to 1 s pulse width (generated by noise simulator) ambience no corrosive ga s, no excessive dust occupied i/o points 32 points (16 points input, 16 points output) max. number of unit unlimited item specifications interface rs232c/rs485 2 ports transmission speed configured with dsw1 and dsw2 1) using rs232c: 300/600/1200/4800/9600/19200/38400bps 2) using rs485: 4800/9600/19200/38400bps communication method half duplex synchronization method start-stop method transmission distance using rs232c: 15m (max), using rs485: 1.2 km transmission code ascii or hex (binary) transmission data format stop bit 1bit/2bit parity (even/odd) data length 7bit/8bit data transmission order from bit 0, by each character transmission unit a message, to the end code (length adjustable) max. message length max. 500 byte/frame (including end and start codes) interface with cpu unit shared memory type: n-series: read and write data with advanced instructions f150 (read) and f151 (write). read and write data with advanced instructions read and write. i/o allocation 16 points input and 16 points output allocated. end code setting select from three types of c cr d cr+lf e etx or set arbitrary code from shared memory. start code start code other special controls end code cut transmissi on mode (control by sequence instruction), convenient for printing out. soft reset (control by sequence instruction) scu module is configured as 32 points i/o module with 16 points input and 16 points output. (for n-series, i/o is allocated by winfpst s/w and registered as 16sx and 16sy.) note 12 unit diagram front view inside view NX700 scu (nx-scu) operation status display reset switch forced reset on the scu. rs-232c/485 interface (ch1) rs-232c/485 interface (ch1) NX700 scu (nx-scu) NX70 scu (NX70-scu) dip switch (for ch1, ch2) dsw1 dsw2 dsw3 on on on 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 dip switch is located on the bottom of NX70 scu (NX70-scu). note 13 operation status display and functions scu operation and communication status is displayed on the led on the top of the front panel. scu front display window implications led items function power (pwr) (on): unit in operation (off): power turned off operation error (alarm) (on): operation error turned on when watchdog timer identifies an error. (press the reset switch to turn off.) (off): normal operation ch.1 sending data monitor (sd 1) (flickering): sending data (off): no sending data. receiving data monitor (rd 1) (flickering): receiving data (off): no receiving data. communication error (err 1) (on): communication error (off): normal communication ch.2 sending data monitor (sd 2) (flickering): sending data (off): no sending data. receiving data monitor (rd 2) (flickering): receiving data (off): no receiving data. communication error (err 2) (on): communication error (off): normal communication nx-scu pwr sd1 rd1 err1 alarm sd2 rd2 err2 scu NX70-scu scu NX700 scu (nx-scu) NX70 scu (NX70-scu) pwr sd1 rd1 err1 alarm sd2 rd2 err2 communication error led (error led) turns on when parity or framing error occurs. receiving: parity, framing error sending: no end code communication error led turns off when normal frame is received or sent (writing to shared memory). note 14 dip switch settings ch1 setting baud- rate data length parity check stop bit end code x- para -meter baud- rate data length control code parity check parity setting stop bit start code x- para -meter ch1 setting parity setting start code end code dsw1 dsw2 dsw3 no no no dip switch is located inside the scu. control code bit location 1) function 1 2 3 4 5 6 7 8 1 2 3 4 dsw1 0 0 0 38400 bps 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 0 1 1 1 1 transmission speed (baud rate) (see below) 19200 bps 9600 bps 4800 bps 2400 bps 1200 bps 600 bps 300 bps 0 1 data length 7 bit 8 bit 0 1 parity check (see below) invalid valid 0 1 parity setting odd parity (odd) even parity (even) 0 1 stop bit length 1 stop bit 2 stop bit 0 1 control signal (see below) (cts, cd) not used used dsw2 0 1 0 1 0 0 1 1 end code (see below) set to shared memory (1 byte) cr (0dh) code cr (0dh), lf (0ah) code etx (03h) code 0 1 start code (see below) stx (02h) not used stx (02h) used 0 1 x-parameter not support 1) ?0?stands for off. ?1? stands for on. when using rs485, the available baud rates are 38,400/19,200/9,600/4,800bps. when parity check is set to invalid, the parity settings are not applied. for control signal, the cts and cd settings can be selected, but set it to not applicable when using [3-wire method without flow control]. (using rs232c communication) start and end codes determine the start and end of a communication frame. at t e n t i o n 15 ch2 setting baud- rate data length parity check stop bit end code x- para -meter baud- rate data length control code parity check parity setting stop bit start code x- para -meter ch2 setting parity setting start code end code dsw1 dsw2 dsw3 no no no control code bit location 1) function 1 2 3 4 5 6 7 8 1 2 3 4 dsw2 0 0 0 38400 bps 1 0 1 0 1 0 1 0 1 1 0 0 1 1 0 0 0 1 1 1 1 transmission speed (baud rate) (see below) 19200 bps 9600 bps 4800 bps 2400 bps 1200 bps 600 bps 300 bps 0 1 data length 7 bit 8 bit 0 1 parity check (see below) invalid valid 0 1 parity setting odd parity (odd) even parity (even) 0 1 stop bit length 1 stop bit 2 stop bits 0 1 control signal (see below) (cts, cd) not used used dsw3 0 1 0 1 0 0 1 1 end code (see below) set to shared memory (1 byte) c r (0d h ) code c r (0d h ), l f (0a h ) code etx (03 h ) code 0 1 start code (see below) stx (02h) not used stx (02h) used 0 1 x-parameter not support 1) ?0?stands for off. ?1? stands for on. when using rs485, the available baud rates are 38,400/19,200/9,600/4,800bps. when parity check is set to invalid, the parity settings are not applied. for control signal, the cts and cd settings can be selected, but set it to not applicable when using [3-wire method without flow control]. (using rs232c communication) start and end codes determine the start and end of a communication frame. at t e n t i o n 16 example (dsw settings) transmission speed: 9600 bps data length: 8 bit parity check: valid parity bit: odd stop bit: 1 bit control signal: not applicable end code: cr start code: not used x-parameter: disabled ch1 setting transmission speed: 9600 bps data length: 8 bit parity check : valid parity bit: odd stop bit: 1 bit control signal: not used end code: cr start code: not used x-parameter: disabled ch2 setting baud- rate data length parity check stop bit end code x- para -meter baud- rate data length control code parity check parity setting stop bit start code x- para -meter ch2 setting parity setting start code end code dsw1 dsw2 dsw3 no no no ch1 setting control code 17 2 wiring wiring rs232c/rs485 interface scu connection signal external device referred above means a variety of rs232 and rs485 devices. typical wiring methods are as follows: 1. rs232 wiring: 3-wire method without flow control (common wiring method) 2. rs485 wiring: end termination resistance is built-in. pin no signal name mnemonic direction scu external device 1 frame ground fg 2send data sd 3 receive data rd 4 5 signal ground gnd 6 485 transiver- 485- 7 485 transiver+ 485+ 8 9power +5v 12345 6789 connector (9p) 18 rs232 wiring diagram 3-wire method without flow control (rs232 device - 9 pin) 3-wire method without flow control (rs232 device-25 pin) rs485 wiring diagram scu (9p) pin no mnemonic 1 2sd 3rd 4 5sg 6 rs485- 7 rs485+ 8 9 rs-232 device (9p) pin no mnemonic 1fg 2rd 3sd 4dtr 5sg 6dsr 7rts 8cts 9ri turn off the dsw1 no. 8 or dsw3 no.4 which are the control codes. at t e n t i o n scu (9p) pin no mnemonic 1 2sd 3rd 4 5sg 6 rs485- 7 rs485+ 8 9 rs-232 device (25p) pin no mnemonic 1fg 2sd 3rd 4rts 5cts 6dsr 7sg 8cd 20 dtr scu (9p) pin no mnemonic 1 2 3 4 5 6 485+ 7 485- 8 9 rs-485 device mnemonic 485+ 485- 19 3 operations and programming examples basic operations you need ladder program to operate the scu. data exchanges between this unit and cpu unit is transmitted via shared memory. data input from external devices is stored in shared memory only when there is an end code in the data. data is automatically output when written to shared memory. the following diagram shows the data flow in each case of barcode reader connected or printer connected. connector (9p) barcode reader printer rs232c (rs485) drive receiver data shared memory and i/o cpu data memory rs232c (rs485) drive receiver c h 1 c h 2 connector (9p) 9788940200278 h d e *1 shared memory of scu enables read/ write at both the cpu (processor) of the scu and the cpu(processor) of the cpu unit. data memory cpu f g cpu unit scu unit c backplane connector (50p) 20 precautions for scu operation for ascll communication of rs232c/rs485 errors of transmission processing are reflected at contacts (nx series: x4 to xd, nx plus series: r0.4 to r0.13) so resending with ladder program is recommended. (see below) if an error occurs while the frame is receiving, the frame will be cleared and error led turns on. but if the next frame is a normal frame, the error led turns off and the frame is processed as the received frame. when the start code is effective, the frame will start at the last receiving start code and end at the end code. 1. when the end code is not received due to communication trouble, the scu stands by until the end code is received. 2. you can prevent a prolonged stand-by as follows: request resending to the external rs232c (rs485) device. if resending is not available at the other rs232c (rs485) device, perform time-up process with ladder program and request resending to the external device. barcode reader shared memory cpu memory input to the scu from external devices memory cpu scu (unit processing) cpu unit (ladder program) output from inside the scu shared memory cpu memory memory cpu printer c d e f g h d e f g scu (unit processing) cpu unit (ladder program) products like id-x, where i/o (sending/receiving) passes through only one channel, can be operated as half duplex. the scu performs communications regardless of prog/run mode, but data transmission is available only in run mode. at t e n t i o n [ex] stx: start code etx: end code start code is effective: 1 frame start code is not effective stx stx etx 21 3. the scu buffer status when resending from the external rs232c (rs485) device is as follows: software reset is available when resetting the scu in emergency. 1. turn y1d (r1.13) on with ladder program to reset. (software reset) 2. it takes approx. 1msec from software reset request to complete initialization. 3. xe (r0.14) turns on when initialization completes. ensure the following when set end code with shared memory.(the end code is read from shared memory at every sending and receiving process.) 1. sending: set the end code before sending request. 2. receiving: set the end code before the external rs232c (rs485) device starts transmission. when y1e (r1.14) (ch1), y1f (r1.15) (ch2) is turned on, the end code transmission can be disabled. (convenient for output to the printer.) make sure to turn on y1e (r1.14) and y1f (r1.15) before sending request. start code is not effective previous frame resent frame to shared memory of the received frame stx stx etx start code is effective previous frame resent frame to shared memory of the received frame stx stx etx 22 programming send and receive data with cpu unit ladder program for data read / write with shared memory in the scu. two advanced instructions are used for this: read (f150) and wrt (f151) . in addition, handshake for data read/write will be determined by contact on/off (two points for each x and y). program configuration a program consists of handshake with shared memory and advanced instructions. see "timing for sending and receiving" on page 25 for detailed information on handshake timing. see "advanced instructions" on page 27 for detailed information on plc advanced instructions. see "shared memory allocation table" on page 29 for detailed information on shared memory. see "i/o allocation table" on page 31 for detailed information on i/o allocation. shared memory register (word operand) special (high- function) unit: special units that include process and shared memory inside the unit. (ex. scu, analog, location spotting units) data read from special (high-function) unit (f150) data write to special (high-function) unit (f151) high-function unit cpu unit nx series wx, wy..... dt (data) fl (file) ld (link) nx plus series r..... m (data) w (file) l (link) 23 using read in winfpst (receiving from external rs232c (rs485) device) when scu is installed in the first slot of plc system and external rs232c (rs485) is connected to ch1. using write in winfpst (transmitting to external rs232c (rs485) device) when scu is installed in the first slot of plc system and external rs232c (rs485) is connected to ch1. f150 (read) (data read from high function unit.) condition for read condition for read completion read read completion signal (output to the scu unit) x1: for ch1 receiving x1 turns on when normal data is input to the rs232c (rs485) device connected to ch1. y11: for ch1 receiving when reading received data from shared memory, turn on y11. turn on y11 when x1 is turned off. x1 y11 x1 y11 r100 r101 r100 y11 y11 r100 r101 f151 (wrt) (data write to high-function unit ) condition for write condition for write completion write write completion signal (write to the scu unit) x0: for ch1 sending when the scu received correct data, x0 turns on. y10: for ch1 sending when writing sending data to shared memory, turn on y10. turn off y10 when x0 is turned on. xo y1o xo y1o r104 r103 y1o y1o r103 r104 r103 24 using read in wingpc (receiving from external rs232c (rs485) device) when scu is installed in the first slot of plc system and external rs232c (rs485) is connected to ch1. using write in wingpc (transmitting to external rs232c (rs485) device) when scu is installed in the first slot of plc system and external rs232c (rs485) is connected to ch1. read (data read from high function unit.) condition for read condition for read completion read read completion signal (output to the scu unit) r0.1: for ch1 receiving r0.1 turns on when normal data is input to the rs232c (rs485) device connected to ch1. r1.1: for ch1 receiving when reading received data from shared memory, turn on r1.1. turn on r1.1 when r0.1 is turned off. r0.1 r1.1 r0.1 r1.1 r100 r101 r100 r1.1 r1.1 r100 r101 write (data write to high-function unit ) condition for write condition for write completion write write completion signal (write to the scu unit) r0.0: for ch1 sending when the scu received correct data, r0.0 turns on. r1.0: for ch1 sending when writing sending data to shared memory, turn on r1.0. turn off r1.0 when r0.0 is turned on. r0.0 r1.0 r0.0 r1.0 r104 r103 r1.0 r1.0 r103 r104 r103 25 timing for sending and receiving regardless of the slot location where the scu is installed, sending and receiving is available. it is controlled by contacts on/off status. per each ch, 2 points for sending and 2 points for receiving. (ex) when installed in slot 0 timing chart for ch1 using. sending data write from plc cpu to scu shared memory, and y10 (r1.0) on/off setting should be controlled by ladder program. receiving data read with plc cpu from scu shared memory, and y11 (r1.1) on/off setting should be performed by ladder program. ch1 for sending x0 (r0.0) for receiving x1 (r0.1) y10 (r1.0) y11 (r1.1) ch 2 for sending x2 (r0.2) for receiving x3 (r0.3) y12 (r1.2) y13 (r1.3) sending xo (r0.0) read from scu shared memory to scu cpu, and send it to the external device data buffer clear data write data from plc cpu to scu shared memory. x0 turns on when the transmission completes with the end code from the scu to the external device. scu starts perform with ladder program y10 (r1.0) receiving x1 (r0.1) data buffer clear data read scu shared memory data with plc cpu unit scu starts perform with ladder program y11 (r1.1) save data from the external device to shared memory. 26 timing chart for ch2 using sending data write from plc cpu to scu shared memory, and y12 (r1.2) on/off setting should be performed by ladder program. receiving data read with plc cpu from scu shared memory, and y13 (r1.3) on/off setting should be performed by ladder program. sending x2 (r0.2) read from scu shared memory to scu cpu, and send it to the external device data buffer clear data write data from plc cpu to scu shared memory. scu starts perform with ladder program y12 (r1.2) receiving x3 (r0.3) data buffer clear data scu starts perform with ladder program y13 (r1.3) read scu shared memory data with plc cpu unit save data from the external device to shared memory. 27 advanced instructions shared memory instruction - read in winfpst [programming example] s1: installation slot number of scu unit. s2: starting address of shared memory where source data is stored. n: the number of words of source data to read. d: starting address of plc cpu where to store the read data. [ f150 read , s1, s2, n, d ] k3: scu slot (slot 0) k251: scu shared memory address (address 251) k2: the number of words of data to read (2 words) dt15: starting word operand of plc cpu where to store the read data (dt15) when r0 is on, the scu shared memory address 251 (ch1 receiving buffer) reads two words of data and send it to NX700 plc cpu data registers, dt15 and dt16. [ f150 read , k3, k251, k2, dt15 ] ro the operands (called device, data, or register in other company?s products) can be divided into bit operand that processes bit information and word operand that processes word information. word operand: wx, wy, wr, wl, ld, dt, fl, ev, sv, ix, iy.. i0 to id contact operand: x, y, r, l, t, c... . f150 (read) instruction processes word, so 10byte data is processes as 5 words. important 28 shared memory instruction - read in wingpc [programming example] read to = rr1 sz = nr3 fr = nn5:nr6 nn5 : slot no. of scu mounted. (number, and first i/0 slot start from 0) nr6 : start address of shared memory of scu (word address) nr3 : number of words to be read rr1 : start word operand of plc for storing read data if m0.0 turns on , 2 words data is read from shared memory address 251 (ch1 receiving buffer) of scu installed in slot no .0, and send them to w0 of data register of plc. read to = 2 w 0 sz = 2 fr = 0:251 m0.0 nn5(0) : slot no. of scu mounted. (slot 0) nr6(251) : shared memory address of scu (address 251) nr3(2) : the number of words to read (2 words) rr1(w0) : first word operand of plc to store read data (w0) the kinds of operand (data memory) for NX700/ NX70 plc data memory : r, l, k, m, f, w, sr .. as read instruction is executed in the unit of word, 10 byte data become 5 words important 29 shared memory instruction - write in winfpst [programming example] shared memory instruction - write in wingpc [programming example] shared memory allocation table scu has built-in shared memory that is read/write accessible from plc cpu unit. inside the shared memory, the sending and receiving areas are allocated. therefore, plc cpu unit and rs232c external devices performs data read/write through scu shared memory. s1: installation slot number of scu unit s2: starting address of the cpu where the input data is stored. n: the number of words of source data to write to the destination. d: starting address of scu shared memory where the data will be stored. [ f151 wrt , s1, s2, n, d ] k0: scu slot (slot 0) dt100: starting address of the plc cpu where the input data is stored. (dt100) k10: the number of words of source data to write to the destination. (2 words) k1: starting address of scu shared memory where the data will be stored. (address 1) when r0 is on, 10 words from NX700 plc data register dt100 (dt100 to dt109) will be sent to the scu shared memory address 1 (ch1 sending buffer). [ f151 wrt , k0, dt100, k10, k1 ] ro write to = nn1 : nr2 sz = nr3 fr = nn5 nn1 : slot no. of scu mounted. (number, and first i/0 slot start from 0) nr2 :first address to write on the shared memory of scu. (number/ register) nr3 : number of words to be written nr5 : first address of data to writes (number/ register) when m0.1 becomes on, 2 words from data register w0 of NX70/NX700 plc is transmitted into shared memory addre ss 1 (ch1 transmission buffer) of scu installed in slot no. 0. write to = 0 : 1 sz = 2 fr = w0 m0.1 nn1(0) : slot no. of scu mounted. ( slot no. 0) nr2(1) : first address to write on the shared memory of scu. (address 1) nr3(2) : number of words to be written (2 words) nn5(w0) : start word operand of write data (w0) 30 data transmission handshake is processed at plc contacts on/off (two points for each input and output). shared memory allocation 250 words (500 characters) ch1 end code configuration area ch1 sending data length 250 words (500 characters) 250 words (500 characters) 250 words (500 characters) ch2 end code configuration area ch1 receiving data length ch2 sending data length ch2 receiving data length effective only when dip switch [shared memory] is set, and set to lower bytes. effective only when the ch1 communication is set to hex (bin). effective only when the ch2 communication is set to hex (bin). ch1 sending buffer rs-232c (rs485) device ch1 receiving buffer rs-232c (rs485) device ch2 sending buffer rs-232c (rs485) device ch2 receiving buffer rs-232c (485) device 250 500 1 501 251 750 751 1000 1001 10 02 10 03 10 04 10 05 10 06 address sending buffer area: data for sending is stored. receiving buffer area: received data is stored. note 31 i/o allocation table the x, y contact number for i/o is determined by the installation location of the scu and the number of points of other i/o units. the i/o numbers shown below are applied when the scu is installed in slot 0 of base backplane. for i/o of scu, 16 points from x0 to xf will be allocated for input and 16 points from y10 to y1f will be allocated for output. the meaning of each i/o contact is shown in the table below and the handshake processing will be based on this status. input signal event n-series n-plus series x0 r0.0 for ch1 sending x0 (r0.0) turns on when the scu receives sending data. *1 x1 r0.1 for ch1 receiving x1 (r0.1) turns on when normal data is input from devices connected to ch1. *1 x2 r0.2 for ch2 sending x2 (r0.2) turns on when the scu receives sending data. *1 x3 r0.3 for ch2 receiving x3 (r0.3) turns on when normal data is input from devices connected to ch2. *1 x4 r0.4 for ch1 receiving data x4 (r0.4) turns on only when framing error occurs in received data. x5 r0.5 for ch1 receiving data x5 (r0.5) turns on only when parity error occurs in received data. x6 r0.6 for ch1 receiving data x6 (r0.6) turns on when the received data buffer is full. x7 r0.7 for ch1 receiving data x7 (r0.7) turns on when message length error occurs in received data. x8 r0.8 for ch1 sending data x8 (r0.8) turns on when message length error occurs in sending data. x9 r0.9 for ch2 receiving data x9 (r0.9) turns on only when framing error occurs in received data. xa r0.10 for ch2 receiving data xa (r0.10) turns on only when parity error occurs in received data. xb r0.11 for ch2 receiving data xb (r0.11) turns on when the received data buffer is full. xc r0.12 for ch2 receiving data xc (r0.12) turns on when message length error occurs in received data. xd r0.13 for ch2 sending data xd (r0.13) turns on when message length error occurs in sending data. xe r0.14 for scu operation ready indication xe (r0.14) turns on when scu initialization completes. xf r0.15 unused see "timing for sending and receiving" on page 25 for detailed information. note 32 input signal event n-series n-plus series y10 r1.0 for ch1 sending y10 (r1.0) turns on when sending data is written to shared memory. turn off y10 (r1.0) when x0 (r0.0) is turned on. y11 r1.1 for ch1 receiving y11 (r1.1) turns on when sending data is read from shared memory. turn off y11 (r1.1) when x1 (r0.1) is turned off. y12 r1.2 for ch2 sending y12 (r1.2) turns on when sending data is written to shared memory. turn off y12 (r1.2) when x2 (r0.2) is turned on. y13 r1.3 for ch2 receiving y13 (r1.3) turns on when sending data is read from shared memory. turn off y13 (r1.3) when x3 (r0.3) is turned off. y14 r1.4 unused y15 r1.5 unused y16 r1.6 unused y17 r1.7 unused y18 r1.8 data format setting of ch1 on for ascii and off for hex (binary) format y19 r1.9 data format setting of ch2 on for ascii and off for hex (binary) format y1a r1.10 unused y1b r1.11 unused y1c r1.12 unused y1d r1.13 for software reset scu is initialized when y1d (r1.13) is turned on. approx. 1msec after initialization completes, xe (r0.14) turns on. turn off y1d (r1.13) immediately after xe (r0.14) turns on. y1e r1.14 ch1 if y1e (r1.14) is turned on before data send request turn in y10 (r1.0), end code will not be transmitted. y1f r1.15 ch2 if y1f (r1.15) is turned on before data send request turn in y12 (r1.2), end code will not be transmitted. data error warning signals (x4 to xd, r0.4 to r0.13) turn off when scu reset switch is pressed or normal data is received. note 33 NX70, NX700 plc installation example NX700 plc system configuration is illustrated below. in this case, the scu is installed in slot no.4 and i/o units are installed in slot no. 0 to 3. base backplane (5 slots) 64 points input (x0 to x3f, r0.0 to r3.15) 32 points input (x40 to x5f, r4.0 to r5.15) 32 points output (y60 to y7f, r6.0 to r7.15) scu unit 16 points input: x90 to x9f, r9.0 to r9.15 16 points output: y100 to y10f, r10.0 to r10.15 16 points output (y80 to y8f, r8.0 to r8.15) 01234 there is no limit on the location and number of scu installed, and scu can be installed regardless whether the backplane is base or expansion. when allocating i/o map with winfpst, scu is allocated as "16sx and 16sy". when allocating i/o map with wingpc, scu is allocated as "both". important 34 plc programming examples self-test program for winfpst example of ladder program that performs self-loop at the scu. convenient program for self-test of the scu. operation description send data from ch1 and receive it at ch2, and compare the sent and received data. send data from ch2 and receive it at ch1, and compare the sent and received data. y50 turns on when the compared data are not identical. data write method: winfpst s/w on-line dt0, dt1 and dt5, dt6 at register monitoring. then, verify data at each of dt10, dt11 and dt15, dt16. (see winfpst s/w help for detailed information. ) dip switch (dsw) setting must be identical at ch1 and ch2, and the setting is arbitrary. plc system configuration example shows a NX700 plc system (nx-cpu700, nx-cpu750a, b, c, or d), with a scu installed in base backplane slot 3. use 9-pin cable when rs232c communication checking at ch1 and ch2 of the scu, and use 2-pin connection when rs485 communication checking. (see the wiring important nx-cpu750b cpu nx-x16d dc in nx-y16rv ry out nx-x16d dc in nx-scu scu nx-y16rv ry out system configuration (nx-cpu700, nx-cpu750a, b, c, d) i/o allocation base backplane (5 slots) x0 ~ xf y10 ~ y1f x20 ~ x2f y50 ~ y5f scu x30 ~ x3f y40 ~ y4f 35 ch1 and ch2 pin wiring diagram scu (ch1) pin no mnemonic 1fg 2sd 3rd 4 5sg 6 7 8 9 scu (ch2) pin no mnemonic 1fg 2sd 3rd 4 5sg 6 7 8 9 scu (ch1) pin no mnemonic 1 2 3 4 5 6485- 7 485+ 8 9 scu (ch2) pin no mnemonic 1 2 3 4 5 6 485- 7 485+ 8 9 for rs-232c communication checking for rs-485 communication checking 36 sequence program - ascii format self -test ladder program (for winfpst) set ch1 to ascii mode set ch2 to ascii mode 37 slot no.3 from plc cpu dt10, 2 words of data is stored to scu shared memory address 501 slot no.3 from scu shared memory address 251, 2 words of data is stored to plc cpu dt15 and dt16. sent data (end code comparison) received data data comparison 38 sequence program - hex format self-test ladder program (for winfpst) 39 40 self-test program for wingpc example of ladder program that performs self-loop at the scu. convenient program for self-test of the scu. operation description send data from ch1 and receive it at ch2, and compare the sent and received data. send data from ch2 and receive it at ch1, and compare the sent and received data. r5.0 turns on when the compared data are not identical. ch1 and ch2 pin wiring diagram write 2-byte data( includes end code "cr") into w0 and w10 before program execution. the data is written using by wingpc s/w. plc system configuration example shows a NX700 plc system (nx-cpu700p), with a scu installed in base backplane slot 3. used the same dip switch setting for both ch1 and important nx-cpu750b cpu nx-x16d dc in nx-y16rv ry out nx-x16d dc in nx-scu scu nx-y16rv ry out system configuration (nx-cpu700p) i/o allocation base backplane (5 slots) r0.0 to r0.15 r1.0 to r1.15 r2.0 to r2.15 r5.0 to r5.15 scu r3.0 to r3.15 r4.0 to r4.15 scu (ch1) pin no mnemonic 1fg 2sd 3rd 4 5sg 6 7 8 9 scu (ch2) pin no mnemonic 1fg 2sd 3rd 4 5sg 6 7 8 9 scu (ch1) pin no mnemonic 1 2 3 4 5 6485- 7 485+ 8 9 scu (ch2) pin no mnemonic 1 2 3 4 5 6 485- 7 485+ 8 9 for rs-232c communication checking for rs-485 communication checking 41 sequence program - ascii format self -test ladder program (for wingpc) () () () () () () () 42 () () () () () () () () 43 example of using a barcode reader for winfpst connect a barcode reader to scu ch1. (ex. barcode reader: (japan) token thls-6300) read barcode information and store it to plc. operation description read the information at the barcode reader connected to ch1 and store it to from plc dt100. the dip switches (dsw1 and dsw2) are set to 9600 bps, 8 bit, no parity, 1 stop bit, and end code is cr. scu is installed in base backplane slot 0 of a NX700 plc system (nx-cpu700, nx-cpu750a, b, c, d). connect scu ch1 and barcode reader with 9-pin cable. important baud rate data length parity check parity setting control code stop bit end code x-parameter start code dsw1 dsw2 scu dip sw i tc h (ch 1 ) sett i ngs ch1 setting on on nx-cpu750b cpu nx-scu scu nx-x16d dc in nx-x16d dc in nx-y16rv ry out nx-y16rv ry out NX700 system configuration (nx-cpu700, nx-cpu750a, b, c, d) x0 to xf y10 to y1f y20 to y2f y30 to y3f 9-pin cable scu barcode reader (thls-6300) 44 sequence program ? ladder program example for using a barcode reader (for winfpst) set ch1 to ascii mode setting 45 example of using a barcode reader for wingpc connect a barcode reader to scu ch1. (ex. barcode reader: (japan) token thls-6300) read barcode information and store it to plc. operation description read the information at the barcode reader connected to ch1 and store it to from plc dt100. the dip switches (dsw1 and dsw2) are set to 9600 bps, 8 bit, no parity, 1 stop bit, and end code is cr. scu is installed in base backplane slot 0 of a NX700 plc system (nx-cpu700p). connect scu ch1 and barcode reader with 9-pin cable. important baud rate data length parity check parity setting control code stop bit end code x-parameter start code dsw1 dsw2 scu dip sw i tc h (ch 1 ) sett i ngs ch1 setting on on nx-cpu750b cpu nx-scu scu nx-x16d dc in nx-x16d dc in nx-y16rv ry out nx-y16rv ry out NX700 system configuration (nx-cpu700p) r0.0 to r0.15 r1.0 to r1.15 r2.0 to r2.15 r3.0 to r3.15 9-pin cable scu barcode reader (thls-6300) 46 sequence program ? ladder program example for using a barcode reader (for wingpc) () () () 47 troubleshooting 48 49 50 the scu is mounted in slot 0, and the contact number in ( ) is the contact number of ch2 error indication. r0.4 (r0.9) r0.5 (r0.10) r0.6 (r0.11) r0.7 (r0.12) r0.8 (r0.13) 51 4 product dimensions and installation NX700 plc product dimensions system dimensions (mm) motherboard installation diagram (mm) 111.0 a b 115.5 118.5 nx-cpu750b cpu dc in nx-x64d dc in nx-x64d dc in nx-x32d tr out nx-y32t tr out nx-y16t tr out nx-y16t tr out nx-y16t tr out nx-y16t unit (mm) slot types dimensions a b 3-slot type 205.0 183.8 5-slot type 276.0 254.2 8-slot type 381.0 359.8 10-slot type 452.0 430.2 12-slot type 522.0 500.6 5.0 * 4 l 81.0 7.0 27.5 22.5 a unit (mm) slot a l 3-slot type 205.0 153.8 5-slot type 276.0 224.2 8-slot type 381.0 329.8 10-slot type 452.0 400.2 12-slot type 522.0 470.6 52 cpu, i/o, module dimensions (mm) scu unit and special unit dimensions (mm) 115.5 35.0 104.0 input output nx-cpu750b cpu nx-x16d nx-y64t 115.5 35.0 104.0 nx-ethernet ethernet aui t 12v scu nx-scu 35.0 35.0 + - f.g nx-mwlink mwlink com1 rs232c rs485 com2 rs232c rs485 53 NX70 plc product dimensions system dimensions (mm) unit (mm) a b 4-m5 10 5.0 30.0 38.0 c slot types catalog number dimensions (a) dimensions (b) dimensions (c) 2-slot type NX70-base02 149.5 129.5 115.5 3-slot type NX70-base03 185.0 165.0 151.0 5-slot type NX70-base05 256.0 236.0 222.0 6-slot type NX70-base06 291.5 271.5 257.5 8-slot type NX70-base08 362.5 342.5 328.5 10-slot type NX70-base10 398.0 378.0 364.0 12-slot type NX70-base12 433.5 413.5 399.5 54 power unit dimensions(mm) cpu, i/o, special unit dimensions (mm) com1 rs232c rs485 com2 rs232c rs485 55 installation installation 1. insert the module holding projector of the module into the module holding groove on the backplane. 2. push the top of the module toward the backplane until it is clamped in place. 3. ensure that the module is in place onto the backplane, and then fasten the screw using a screwdriver. removal 1. unfasten the screw that holds the module in place using a screwdriver. 2. hold on pressing the locking button on the edge of the top side of the module, and pull the module from the backplane. 1 screw locking part 56 publication rsa-NX700-um009b-en-p - july 2005 59 supersedes publication rsa-NX700- um009a-en-p - march 2005 copyright ? 2005 rockwell samsung automation. all rights reserved. pri nted in korea. NX70/NX700 serial communicati ons unit (scu) user manual trademarks not belonging to rockwell samsung automation are property of their respective companies. rockwell samsung automation 447-6, gongse-ri, giheung-eup, youngin-city, gyeonggi-do, south korea, 449-902 tel: 82-31-280-4700 fax: 82-31-280-4900 www.samsungautomation.co.kr technical support export sales team tel: 82-31-280-4768 fax: 82-31-280-4900 |
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