Overview; Table 17: Process Image - I/O Module 750-496 - WAGO 750-496 Manual

WAGO-I/O-SYSTEM 750
750-496 8AI 0/4-20mA S.E.
4.1

Overview

Presentation of control/status bytes a function of fieldbus coupler/controller!
The I/O module always makes its complete process image incl. control/status
bytes available to the fieldbus coupler/controller. The WAGO-I/O-CHECK
commissioning tool accesses the complete commissioning process image. The
fieldbus coupler/controller uses a different process image to stage cyclic process
data via the fieldbus. In the other process image, depending on the fieldbus
coupler/controller, the representation of control/status bytes can be suppressed.
17
Table : Process Image – I/O Module
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
...
Byte 21
Byte 22
Byte 23
1) CHx_Sx = Status byte x from channel x
CHx_D0 = Low byte for process value for channel x
CHx_D1 = High byte for process value for channel x
2) CHx_Cx = Control byte x from channel x
Manual
Version 1.2.0
750-496
1)
Input
Status byte CH1_S0
Function of status byte: Process
value CH1_D0
Function of status byte: Process
value CH1_D1
Control byte CH2_S1
Function of status byte: Process
value CH2_D0
Function of status byte: Process
value CH2_D1
...
Status byte CH8_S7
Function of status byte: Process
value CH8_D0
Function of status byte: Process
value CH8_D1
Process Image
Byte 0 Control byte CH1_C0
Byte 1 Function of control byte: Reserved
Byte 2 Function of control byte: Reserved
Byte 3 Control byte CH2_C1
Byte 4 Function of control byte: Reserved
Byte 5 Function of control byte: Reserved
... ...
Byte 21 Control byte CH8_C7
Byte 22 Function of control byte: Reserved
Byte 23 Function of control byte: Reserved
Process Image
2)
Output
31