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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

Содержание Samsung NX-SCU

Страница 1: ...NX70 NX700 Serial Communications Unit SCU User Manual www DataSheet4U com DataSheet www DataSheet4U com ...

Страница 2: ... liability for actual use based on the examples and diagrams No patent liability is assumed by Rockwell Samsung Automation with respect to use of information circuits equipment or software described in this manual Reproduction of the contents of this manual in whole or in part without written permission of Rockwell Samsung Automation is prohibited Throughout this manual we use notes to make you aw...

Страница 3: ...witch 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 Installation 51 NX700 PLC Product Dimensions 51 NX70 PLC Product Dimensions 53 Power Unit Dimensions mm 54 ...

Страница 4: ...4 ...

Страница 5: ...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...

Страница 6: ...ts 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 Sy...

Страница 7: ...ion 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 lin...

Страница 8: ...8 ...

Страница 9: ... 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 ...

Страница 10: ...e 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 netwo...

Страница 11: ...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 en...

Страница 12: ... 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 ...

Страница 13: ...ing 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 ...

Страница 14: ...low 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 usin...

Страница 15: ...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 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 r...

Страница 16: ...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...

Страница 17: ...ods 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 2 SEND DATA SD 3 RECEIVE DATA RD 4 5 SIGNAL GROUND GND 6 485 TRANSIVER 485 7 485 TRANSIVER 485 8 9 POWER 5V 1 2 3 4 5 6 7 8 9 Connector 9P ...

Страница 18: ...RS485 7 RS485 8 9 RS 232 device 9P PIN NO Mnemonic 1 FG 2 RD 3 SD 4 DTR 5 SG 6 DSR 7 RTS 8 CTS 9 RI Turn off the DSW1 No 8 or DSW3 No 4 which are the control codes ATTENTION SCU 9P PIN NO Mnemonic 1 2 SD 3 RD 4 5 SG 6 RS485 7 RS485 8 9 RS 232 device 25P PIN NO Mnemonic 1 FG 2 SD 3 RD 4 RTS 5 CTS 6 DSR 7 SG 8 CD 20 DTR SCU 9P PIN NO Mnemonic 1 2 3 4 5 6 485 7 485 8 9 RS 485 device Mnemonic 485 485 ...

Страница 19: ...ly 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 S...

Страница 20: ...eceived 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 Ou...

Страница 21: ...nd 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 re...

Страница 22: ...ormation 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 memo...

Страница 23: ...al 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 compl...

Страница 24: ...U 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...

Страница 25: ...1 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 CH2 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 ...

Страница 26: ...g 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 ...

Страница 27: ...ad 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 an...

Страница 28: ...s 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 2W0 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 NX7...

Страница 29: ...0 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...

Страница 30: ...ta 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...

Страница 31: ...ing 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 w...

Страница 32: ...5 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 of...

Страница 33: ...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 0 1 2 3 4 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 16S...

Страница 34: ...y 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 co...

Страница 35: ...nic 1 FG 2 SD 3 RD 4 5 SG 6 7 8 9 SCU CH2 PIN NO Mnemonic 1 FG 2 SD 3 RD 4 5 SG 6 7 8 9 SCU CH1 PIN NO Mnemonic 1 2 3 4 5 6 485 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 ...

Страница 36: ...ata is stored to PLC CPU DT5 and DT6 Sent data end code comparison Received data end code comparison CH2 sending Data comparison Turns on when the data are not identical DF R9010 R9010 R9014 X30 Y40 X30 Y40 R0 R0 R1 Y40 R1 X33 Y43 X33 Y43 R2 R2 R3 Y43 R3 R3 R3 R900B SSTP 1 NSTP 1 NSTP 3 Y48 Y49 R0 R1 Y40 NSTP 2 SSTP 2 Y43 R2 R3 NSTP 1 R8 F151 WR K 3 DT 0 K 2 K 1 F150 READ K 3 K 751 K 2 K 5 F60 CMP...

Страница 37: ...rds 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 CH2 sending CH1 receiving ...

Страница 38: ...tored to shared memory address 1 From slot NO 3 DT100 2 words of data is stored to SCU shared memory address 1003 transmission length setting CH2 sending Slot NO 3 From SCU shared memory address 751 1 word of data is stored to PLC CPU DT5 Sent data Received data Data comparison Turns on when the data are not identical ...

Страница 39: ...red memory address 501 From slot NO 3 DT102 2 words of data is stored to SCU shared memory address 1005 transmission length setting CH1 receiving Slot NO 3 From SCU shared memory address 251 1 word of data is stored to PLC CPU DT15 Data comparison Sent data Received data ...

Страница 40: ... 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 C P U 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...

Страница 41: ...m W0 Save to W5 1 word of data from address 751 of shared memory of SCU CH2 receiving Data comparison Turns on when the data are not identical R3 0 R4 0 WRITE To 03 1 Sz 1 Fr W0 M0 0 R3 0 R4 0 M0 1 M0 0 M0 0 M0 1 R4 0 R4 0 R3 3 R4 3 M0 2 R3 3 R4 3 M0 3 READ To W5 Sz 1 Fr 03 751 M0 0 Slot NO 3 M0 2 M0 3 R4 3 R4 3 M0 3 M0 8 W0 W5 sent data received data ...

Страница 42: ...51 of shared memory of SCU CH1 receiving Data comparison Turns on when the data are not identical R3 2 R4 2 WRITE To 03 501 Sz 1 Fr W10 M0 4 R3 2 R4 2 M0 5 M0 4 M0 4 M0 5 R4 2 R4 2 R3 1 R4 1 M0 6 R3 1 R4 1 M0 7 READ To W15 Sz 1 Fr 03 751 M0 6 Slot NO 3 M0 6 M0 7 R4 1 R4 1 M0 7 M0 9 W10 W15 sent data received data M0 8 M5 0 M0 9 R5 0 ...

Страница 43: ...it 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 switch CH1 settings CH1 Setting ON ON NX CPU750B C P U NX SCU SCU NX X16D DC IN NX X16D DC IN NX Y16RV ...

Страница 44: ...ce Program Ladder program example for using a barcode reader for WinFPST Set CH1 to ASCII mode setting CH1 receiving Slot NO 0 From SCU shared memory address 251 20 words of data is stored to PLC CPU from DT100 ...

Страница 45: ... 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 switch CH1 settings CH1 Setting ON ON NX CPU750B C P U NX SCU SCU NX X16D DC IN NX X16D DC IN NX Y16RV RY OUT ...

Страница 46: ...e for using a barcode reader for WinGPC CH1 receiving Slot No 0 Save to W100 continually 20 words of data from address 251 of shared memory of the SCU R0 1 R1 1 READ To W100 Sz 20 Fr 0 251 M0 0 R0 1 R1 1 M0 1 M0 0 M0 0 M0 1 R1 1 R1 1 0 3 6 16 ...

Страница 47: ...47 Troubleshooting ...

Страница 48: ...48 ...

Страница 49: ...49 ...

Страница 50: ...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 ...

Страница 51: ...32D 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 ı 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 4...

Страница 52: ... 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 ...

Страница 53: ...s 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 ...

Страница 54: ...54 Power Unit Dimensions mm CPU I O Special Unit Dimensions mm COM1 RS232C RS485 COM2 RS232C RS485 ...

Страница 55: ... 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 ...

Страница 56: ...56 ...

Страница 57: ......

Страница 58: ... NX700 Serial Communications 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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