170 I/O Modules
WAGO-I/O-SYSTEM 750
750-806 Fieldbus Controller DeviceNet
TM
Manual
Version 2.0.0
Example: 8-channel digital input modules with diagnostics (8 instances)
Table 121: 8-Channel Digital Input Modules (8 Instances)
Input Process Image
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Data bit
DI 8
Channel 8
Data bit
DI 7
Channel 7
Data bit
DI 6
Channel 6
Data bit
DI 5
Channel 5
Data bit
DI 4
Channel 4
Data bit
DI 3
Channel 4
Data bit
DI 2
Channel 2
Data bit
DI 1
Channel 1
These input modules occupy 4 instances in the “Discrete Input Point Object”
(0x65) class.
12.2.2
Digital Output Modules
The digital output modules provide one bit as the process value per channel that
indicates the status of the respective channel. These bits are mapped in the output
process image.
Each output channel occupies one instance in the "Discrete Output Point Object"
(Class 0x66). I/O modules with data bits assigned by channel also occupy more
instances of this class accordingly.
Some digital output modules provide additional data, e.g., status bits mapped in
the input process image. The input data of these I/O modules occupies a
corresponding number of instances in class (0x65).
For 4-channel or 8-channel digital output modules with diagnostics, the diagnostic
bits are occupied accordingly in the input process image.
Example: 8-channel digital output modules with diagnostics (8 instances)
Table 122: 8-Channel Digital Output Modules with Diagnostics (8 Instances)
Input Process Image
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Diagnostic
bit S 7
Channel 8
Diagnostic
bit S 6
Channel 7
Diagnostic
bit S 5
Channel 6
Diagnostic
bit S 4
Channel 5
Diagnostic
bit S 3
Channel 4
Diagnostic
bit S 2
Channel 4
Diagnostic
bit S 1
Channel 2
Diagnostic
bit S 0
Channel 1
Diagnostic bit S = '0'
no error
Diagnostic bit S = '1' wire break, short circuit or overload
These input modules occupy 8 instances in the “Discrete Input Point Object”
(0x65) class.
Table 123: 8-Channel Digital Output Modules with Diagnostics (8 Instances)
Output process image
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
controls
DO 8
Channel 8
controls
DO 7
Channel 7
controls
DO 6
Channel 6
controls
DO 5
Channel 5
controls
DO 4
Channel 4
controls
DO 3
Channel 4
controls
DO 2
Channel 2
controls
DO 1
Channel 1
These input modules occupy 8 instances in the “Discrete Input Point Object”
(0x66) class.
