WAGO 750-872/020-000 Manual page 228

220 • Process Data Architecture for MODBUS/TCP
Specialty Modules
750-638, 753-638
The above Counter Modules have a total of 6 bytes of user data in both the
Input and Output Process Image (4 bytes of counter data and 2 bytes of
control/status). The two counter values are supplied as 16 bits. The following
tables illustrate the Input and Output Process Image, which has a total of 4
words mapped into each image. Word alignment is applied.
Pulse Width Modules
750-511, (and all variations)
The above Pulse Width modules have a total of 6 bytes of user data in both the
Input and Output Process Image (4 bytes of channel data and 2 bytes of
control/status). The two channel values are supplied as 16 bits. Each channel
has its own control/status byte. The following table illustrates the Input and
Output Process Image, which has a total of 4 words mapped into each image.
Word alignment is applied.
Byte Destination
Offset
High Byte
0 -
1 D1
2 -
3 D3
Byte Destination
Offset
High Byte
0 -
1 D1
2 -
3 D3
Input Process Image
Low Byte
S0 Status byte of Counter 1
D0 Counter Value of Counter 1
S1 Status byte of Counter 2
D2 Counter Value of Counter 2
Output Process Image
Low Byte
C0 Control byte of Counter 1
D0 Counter Setting Value of Counter 1
C1 Control byte of Counter 2
D2 Counter Setting Value of Counter 2
Remark
Remark
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP