Digital Modules
4-10
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
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
LED Scope of the
Diagnosis
Parameters Can
Be Assigned
Module problem INTF/EXTF Module No
Internal malfunction INTF Module No
External malfunction EXTF Module No
Channel error present INTF/EXTF Module No
External auxiliary supply missing EXTF Module No
Front connector missing EXTF Module No
Module not parameterized. INTF Module No
Wrong parameters INTF Module No
Channel information available INTF/EXTF Module No
STOP mode – Module No
Internal voltage failure INTF Module No
EPROM error INTF Module No
Hardware interrupt lost INTF Module No
Parameter assignment error INTF Channel No
Short-circuit to M EXTF Channel Yes
Short-circuit to L+ EXTF Channel Yes
Wire break EXTF Channel Yes
Fuse blown INTF Channel Yes
Sensor supply missing EXTF Channel/channel
group
Yes
No load voltage L+ EXTF Channel/channel
group
Yes
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.
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