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337
Serial Communications
Section 6-1
Modbus-RTU commands can be set simply by turning ON a software switch
after setting the Modbus slave address, function, and data in the DM fixed
allocation words for the Modbus-RTU Easy Master. The response when
received is also store in the DM fixed allocation words for the Modbus-RTU
Easy Master.
DM Fixed Allocation
Words for the
Modbus-RTU Easy
Master
Modbus-RTU commands are stored in the DM Area in D32200 to D32249 for
serial port 1 and in D32300 to D32349 for serial port 2. When a response is
received after turning ON the Modbus-RTU Master Execution Bit, it is stored
in D32250 to D32299 for serial port 1 and in D32350 to D32399 for serial port
2.
08
07
00
D32200
D32201
D32202
D32203
OMRON Inverters
3G3JV, 3G3MV, or 3G3RV
Communications are easily achieved by simply by
turning ON a software switch after setting the
Modbus-RTU command in the DM fixed allocation
words.
Slave address
Function code
Number of communications data bytes
Communications data
15
:
:
Slave address
Function code
Communications data
Slave address
Function code
Communications data
Modbus-RTU Master
Execution Bit for Port 1
A640.00
Modbus-RTU
Modbus-RTU
Words
Bits
Contents
Serial
port 1
Serial
port 2
D32200
D32300
00 to 07
Command
Slave address (00 to F7 hex)
08 to 15
Reserved (Always 00.)
D32201
D32301
00 to 07
Function code
08 to 15
Reserved (Always 00.)
D32202
D32302
00 to 15
Number of communications data
bytes (0000 to 005E hex)
D32203 to
D32249
D32303 to
D32349
00 to 15
Communications data
(94 bytes maximum)
D32250
D32350
00 to 07
Response
Slave address (00 to F7 hex)
08 to 15
Reserved (Always 00.)
D32251
D32351
00 to 07
Function code
08 to 15
Reserved
D32252
D32352
00 to 07
Error code
08 to 15
Reserved (Always 00.)
D32253
D32353
00 to 15
Number of response bytes (0000
to 03EA hex)
D32254 to
D32299
D32354 to
D32399
00 to 15
Response data
(92 bytes maximum)
Содержание CP1H-CPU - 05-2006
Страница 1: ...OPERATION MANUAL CP1H CPU Unit SYSMAC CP Series CP1H X40D CP1H XA40D CP1H Y20DT D Cat No W450 E1 02...
Страница 2: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised May 2006...
Страница 3: ...iv...
Страница 11: ...xii TABLE OF CONTENTS...
Страница 15: ...xvi...
Страница 19: ...xx...
Страница 31: ...xxxii Conformance to EC Directives 6...
Страница 71: ...40 Function Blocks Section 1 5...
Страница 133: ...102 Computing the Cycle Time Section 2 7...
Страница 169: ...138 CPM1A Expansion I O Unit Wiring Section 3 6...
Страница 411: ...380 Clock Section 6 8...
Страница 519: ...488 Replacing User serviceable Parts Section 10 2...
Страница 527: ...496 Standard Models Appendix A...
Страница 535: ...504 Dimensions Diagrams Appendix B...
Страница 628: ...597 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 629: ...598 Connections to Serial Communications Option Boards Appendix F...
Страница 659: ...628 PLC Setup Appendix G...
Страница 665: ...634 Index work words 159 write protection 370...
Страница 667: ...636 Revision History...