WAGO-I/O-SYSTEM 750
Appendix 345
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)
15.1.1 Digital Input Modules
Digital input modules supply one bit of data per channel to specify the signal
state for the corresponding channel. These bits are mapped into the Input
Process Image.
Some digital modules have an additional diagnostic bit per channel in the Input
Process Image. The diagnostic bit is used for detecting faults that occur (e.g.,
wire breaks and/or short circuits).
When analog input modules are also present in the node, the digital data is
always appended after the analog data in the Input Process Image, grouped into
bytes.
15.1.1.1 1 Channel Digital Input Module with Diagnostics
750-435
Table 242: 1 Channel Digital Input Module with Diagnostics
Input Process Image
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Diagnostic
bit
S 1
Data bit
DI 1
15.1.1.2 2 Channel Digital Input Modules
750-400, -401, -405, -406, -410, -411, -412, -427, -438, (and all variations),
753-400, -401, -405, -406, -410, -411, -412, -427
Table 243: 2 Channel Digital Input Modules
Input Process Image
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Data bit
DI 2
Channel 2
Data bit
DI 1
Channel 1
15.1.1.3 2 Channel Digital Input Module with Diagnostics
750-419, -421, -424, -425,
753-421, -424, -425
Table 244: 2 Channel Digital Input Module with Diagnostics
Input Process Image
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Diagnostic
bit S 2
Channel 2
Diagnostic
bit S 1
Channel 1
Data bit
DI 2
Channel 2
Data bit
DI 1
Channel 1
