226 I/O Modules
WAGO-I/O-SYSTEM 750
758-874/000-131
WAGO-I/O-IPC-C6
Manual
Version 1.0.0
Pos: 60.4 /Serie 750 (WAGO-I/O-SYSTEM)/Prozessabbild Mapping/ETHERNET - EtherNet/IP - MODBUS/TCP/PA ETHERNET- Digitale Klemmen MODBUS/TCP (750-342, -352, -830, -842, -849) @ 5\mod_1253542361394_21.doc @ 41900 @ 344444443444444444 @ 1
18.2.1
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.
18.2.1.1 1 Channel Digital Input Module with Diagnostics
750-435
Table 81: 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
18.2.1.2 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 82: 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
18.2.1.3 2 Channel Digital Input Module with Diagnostics
750-419, -421, -424, -425,
753-421, -424, -425
Table 83: 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