750-841 WAGO, 750-841 Datasheet - Page 170
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750-841
Manufacturer Part Number
750-841
Description
CONTR.ETHERNET TCP/IP 10/100MBIT
Manufacturer
WAGO
Datasheet
1.750-841.pdf
(288 pages)
Specifications of 750-841
Rohs Compliant
YES
No. Of Digital Inputs
10
No. Of Digital Outputs
10
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162 •
4.2.3.10
Fieldbus Communication
MODBUS Functions
Function Code FC22 (Mask Write Register)
This function manipulates individual bits within a register using a combination
of an AND mask, an OR mask, and the register’s current content.
Request
Response
Exception
Byte
Byte 0, 1
Byte 2, 3
Byte 4, 5
Byte 6
Byte 7
Byte 8-9
Byte 10-11
Byte 12-13
.....
Byte 7
Byte 8-9
Byte 10-11
Byte 12-13
Byte
.....
Byte 7
Byte 8
Byte
Field name
Transaction identifier
protocol identifier
length field
Unit identifier
MODBUS function code
Reference Number
AND-Mask
OR-Mask
Field name
MODBUS function code
Reference Number
AND-Mask
OR-Mask
Field name
MODBUS function code
Exception code
Example
0x0000
0x0000
0x0002
0x01 not used
0x16
0x0000
0x0000
0xAAAA
Example
0x10
0x0000
0x0000
0xAAAA
Example
0x85
0x01 or 0x02
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
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