Siemens Simatic S7-400 - Manual (Page 281)

Analog Modules
5-65
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
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.
Causes of Errors and Remedial Measures for Analog Input Modules
Table 5-47 Diagnostics Messages of the Analog Input Modules, Causes of Errors and Remedial
Measures
Diagnostics
Message
Possible Error Cause Remedy
Module malfunction An error detected by the module
has occurred -
Internal malfunction The module has detected an error
within the programmable controller -
External malfunction The module has detected an error
outside the programmable controller -
There is a channel
error Indicates that only certain channels
are faulty -
No external auxiliary
voltage Load voltage to supply the 2-wire
transmitter is missing on terminals
L+ and M Feed supply L+
No front connector Jumper between connections 1 and
2 in the front connector missing Install jumper
Parameters have not
been assigned to the
module The module requires the information
as to whether it should work with
system default parameters or with
your parameters Message queued after power-on until
parameter transmission by the CPU has
been completed; parameterize the
module, as required
Wrong parameters A parameter or combination of
parameters is incorrect;
impermissible measurement range,
for example Reassign module parameter
Channel information
available Channel error present; the module
can supply additional channel
information -
Measuring range
module
incorrect/missing One or more measuring range
modules is missing or incorrectly
inserted Insert the measuring range modules on the
module according to the parameter
assignment of the type of measurement
and the measurement range
STOP operating mode Module not parameterized and the
first module cycle not completed If a reboot of the CPU all the digitized
analog values are in the intermediate
memory, this message is reset