362 Appendix
WAGO-I/O-SYSTEM 750
750-8207 PFC200 CS 2ETH RS 3G
Manual
Draft version 1.2.1 from 2017-09-13, valid from FW Version 02.06.20(09)
Table 276: Incremental Encoder Interface Modules 750-634
Input Process Image
Offset
Byte Destination
Description
High Byte
Low Byte
0
-
S
not used
Status byte
1
D1
D0
Counter word
2
-
(D2) *)
not used
(Periodic time)
3
D4
D3
Latch word
*)
If cycle duration measurement mode is enabled in the control byte, the cycle duration is
given as a 24-bit value that is stored in D2 together with D3/D4.
Output Process Image
Offset
Byte Destination
Description
High Byte
Low Byte
0
-
C
not used
Control byte
1
D1
D0
Counter setting word
2
-
-
not used
3
-
-
750-637
The above Incremental Encoder Interface Module has a total of 6 bytes of user
data in both the Input and Output Process Image (4 bytes of encoder data and 2
bytes of control/status). The following table illustrates the Input and Output
Process Image, which have 4 words mapped into each image. Word alignment is
applied.
Table 277: Incremental Encoder Interface Modules 750-637
Input and Output Process Image
Offset
Byte Destination
Description
High Byte
Low Byte
0
-
C0/S0
Control/Status byte of Channel 1
1
D1
D0
Data Value of Channel 1
2
-
C1/S1
Control/Status byte of Channel 2
3
D3
D2
Data Value of Channel 2