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WAGO-I/O-SYSTEM 750
I/O Modules 389
750-882 Media Redundancy ETHERNET Controller
Manual
1.5.0
750-634
The above Incremental Encoder Interface module has 5 bytes of input data (6
bytes in cycle duration measurement mode) and 3 bytes of output data. The
following tables illustrate the Input and Output Process Image, which has 4 words
mapped into each image. Word alignment is applied.
Table 456: Incremental Encoder Interface Modules 750-634
Input Process Image
Instance
Byte Destination
Description
High Byte
Low Byte
n
-
S
not used
Status byte
D1
D0
Counter word
-
(D2) *)
not used
(Periodic time)
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.
The specialty modules represent 1x8 bytes input data and seize 1 Instance in
Class (0x67).
Output Process Image
Instance
Byte Destination
Description
High Byte
Low Byte
n
-
C
not used
Control byte
D1
D0
Counter setting word
-
-
not used
-
-
And the specialty modules represent 1x8 bytes output data and seize 1 Instance
in Class (0x68).
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 457: Incremental Encoder Interface Modules 750-637
Input and Output Process Image
Instance
Byte Destination
Description
High Byte
Low Byte
n
-
C0/S0
Control/Status byte of Channel 1
D1
D0
Data Value of Channel 1
n+1
-
C1/S1
Control/Status byte of Channel 2
D3
D2
Data Value of Channel 2
The specialty modules represent 2x3 bytes input and output data and seize 2
Instances in Class (0x67) and 2 Instances in Class (0x68).