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372
Serial Communications
Section 6-3
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
The Modbus-RTU command is stored in the following words in the DM Area.
• M-type CPU Units
Serial port 1: D32200 to D32249
Serial port 2: D32300 to D32349
• L-type CPU Units
Serial port 1: D32300 to D32349
When a response is received after turning ON the Modbus-RTU Master Exe-
cution Bit, it is sotred in the following words in the DM Area.
• M-type CPU Units
Serial port 1: D32250 to D32299
Serial port 2: D32350 to D32399
• L-type CPU Units
Serial port 1: D32350 to D32399
15 08
07
00
D32200
---
---
D32201
---
---
D32202
D32203
OMRON Inverters
3G3JV, 3G3MV, or
3G3RV
Communications are easily achieved
by simply by turning ON A641.00
after setting the Modbus-RTU
command in the DM fixed allocation
words.
Slave address
Function code
Number of communications data bytes
Communications data
Slave address
Function code
Communications data
Slave address
Function code
Communications data
Modbus-RTU Master
Execution Bit for Port 1
A641.00
Modbus-RTU
:
:
Words
Bits
Contents
Serial port 1
on M-type
CPU Unit
Serial port 2
on M-type
CPU Unit
or
Serial port 1
on L-type
CPU Unit
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)
Содержание CP1L CPU UNIT - 03-2009
Страница 1: ...Cat No W462 E1 06 CP1L CPU Unit SYSMAC CP Series CP1L L_0D_ CP1L M_0D_ OPERATION MANUAL...
Страница 2: ......
Страница 4: ...iv...
Страница 10: ...x...
Страница 22: ...xxii...
Страница 34: ...xxxiv Conformance to EC Directives 6...
Страница 70: ...36 Function Blocks Section 1 5...
Страница 584: ...550 Trouble Shooting Section 8 7...
Страница 627: ...593 Sample Application Section 9 12 Network Settings Network Tab Network Settings Driver Tab...
Страница 630: ...596 Sample Application Section 9 12...
Страница 654: ...620 Troubleshooting Unit Errors Section 11 4...
Страница 662: ...628 Replacing User serviceable Parts Section 12 2...
Страница 668: ...634 Standard Models Appendix A...
Страница 698: ...664 Auxiliary Area Allocations by Function Appendix C...
Страница 746: ...712 Auxiliary Area Allocations by Address Appendix D...
Страница 773: ...739 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 774: ...740 Connections to Serial Communications Option Boards Appendix F...
Страница 806: ...772 Index...
Страница 808: ...774 Revision History...