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.
