Siemens SIMATIC S7-400 Reference Manual page 224

Analog modules
5.17 Diagnostics functions of analog modules
You can find out which diagnostic messages are possible with which modules in the Appendix
entitled "Diagnostic Data of the Signal Modules".
Table 5-43 Diagnostic messages of the analog input modules
Diagnostic message
Module error
Internal error
External error
Channel error
External auxiliary voltage missing
Front connector missing
No module parameters
Incorrect parameters
Channel information available
Measuring range module incorrect/missing
Thermocouple connection error
STOP mode
EPROM error
RAM error
ADC/DAC error
Hardware interrupt lost
Configuration / programming error
Short-circuit to M
Wire break
Reference channel error
Underflow
Overflow
User connection not wired
Open conductor in + direction
Open conductor in - direction
Run time calibration error
Underrange or overrange
Open conductor in the current source
User calibration does not correspond to the param‐
eter assignment
Note
A prerequisite for detecting the errors indicated by programmable diagnostic messages is that
you must have assigned parameters to the analog module accordingly in STEP 7.
224
LED Scope of diagnostics
INTF/EXTF Module
INTF Module
EXTF Module
INTF/EXTF Module
EXTF Module
EXTF Module
INTF Module
INTF Module
INTF/EXTF Module
INTF Module
EXTF Module
- Module
INTF Module
INTF Module
INTF Module
INTF Module
INTF Channel
EXTF Channel
EXTF Channel
EXTF Channel
EXTF Channel
EXTF Channel
EXTF Channel
EXTF Channel
EXTF Channel
EXTF Channel
EXTF Channel
EXTF Channel
EXTF Channel
Reference Manual, Ausgabe 11/2016, A5E00850736-08
Programmable
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
S7-400 Automation System Module Data