WAGO 750-872/020-000 Manual page 229

Serial Interface Modules with alternative Data Format
750-650, (and the variations /000-002, -004, -006, -009, -010, -011, -012,
750-651, (and the variations /000-002, -003)
750-653, (and the variations /000-002, -007)
Note:
With the freely parametrizable variations /003 000 of the serial interface
modules, the desired operation mode can be set. Dependent on it, the
process image of these modules is then the same, as from the appropriate
variation.
The above Serial Interface Modules with alternative data format have a total
of 4 bytes of user data in both the Input and Output Process Image (3 bytes of
serial data and 1 byte of control/status). The following table illustrates the
Input and Output Process Image, which have a total of 2 words mapped into
each image. Word alignment is applied.
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
Input and Output Process Image
Byte Destination
Offset
High Byte
0 -
1 D1
2 -
3 D3
-013)
Input and Output Process Image
Byte Destination
Offset
High Byte
0 D0
1 D2
Process Data Architecture for MODBUS/TCP
Low Byte
C0/S0 Control/Status byte of Channel 1
D0 Data Value of Channel 1
C1/S1 Control/Status byte of Channel 2
D2 Data Value of Channel 2
Low Byte
C/S Data byte
D1
I/O Modules
Remark
Remark
Control/Status byte
Data bytes
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