Siemens Simatic M7-400 Reference Manual page 132

Digital Modules
Diagnostic Messages of the Digital Modules
The table below gives an overview of the diagnostic messages for the digital
modules with diagnostics capability.
You can find out which diagnostic message each module is capable of in the
Appendix entitled "Diagnostic Data of the Signal Modules".
Table 4-8 Diagnostic Messages of the Digital Modules
Diagnostic Message
Module problem
Internal malfunction
External malfunction
Channel error present
External auxiliary supply missing
Front connector missing
Module not parameterized.
Wrong parameters
Channel information available
STOP mode
Internal voltage failure
EPROM error
Hardware interrupt lost
Parameter assignment error
Short-circuit to M
Short-circuit to L+
Wire break
Fuse blown
Sensor supply missing
No load voltage L+
Note
A prerequisite for detecting the errors indicated by programmable diagnostic
messages is that you have assigned parameters to the digital module accordingly
in STEP 7.
4-10
LED Scope of the
Diagnosis
INTF/EXTF Module
INTF Module
EXTF Module
INTF/EXTF Module
EXTF Module
EXTF Module
INTF Module
INTF Module
INTF/EXTF Module
– Module
INTF Module
INTF Module
INTF Module
INTF Channel
EXTF Channel
EXTF Channel
EXTF Channel
INTF Channel
EXTF Channel/channel
group
EXTF Channel/channel
group
S7-400, M7-400 Programmable Controllers Module Specifications
Parameters Can
Be Assigned
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
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