Diagnostic Messages Of The Digital Modules, Causes Of Errors And Remedial Measures - Siemens Simatic M7-400 Reference Manual

Causes of Errors and Remedial Measures for Digital Modules
Table 4-9 Diagnostic Messages of the Digital Modules, Causes of Errors and Remedial
Measures
Diagnostic Message
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 Indicates that only certain channels
error are faulty
No external auxiliary Voltage required to operate the
voltage module is missing (load voltage,
sensor supply)
No front connector Jumper between connections 1 and
2 in the front connector missing
Parameters have not The module requires the information
been assigned to the as to whether it should work with
module system default parameters or with
your parameters
Wrong parameters One parameter or the combination
of parameters is not plausible
Channel information Channel error present; the module
available can supply additional channel
information
Operating mode Module was not parameterized and
STOP the first module cycle has not been
completed
Internal voltage failure Module is defective
EPROM error Module is defective
Hardware interrupt lost The module cannot send an
interrupt, since the previous
interrupt was not acknowledged;
configuration error possible
Parameter assignment Incorrect parameters transferred to
error the module (for example, impossible
input delay); the corresponding
channel is deactivated
Short circuit to M
Overload of output
Short-circuit of output to M
Short circuit to L+ Short circuit of output to L+
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Possible Error Cause
Digital Modules
Remedy
-
-
-
-
Supply missing voltage
Install jumper
Message queued after power-on until
parameter transmission by the CPU has
been completed; parameterize the
module, as required
Reassign module parameter
-
If after rebooting the CPU all the input
values are in the intermediate memory,
this message is reset
Replace module
Replace module
Change the interrupt handling in the CPU
(change priority for interrupt OB; shorten
interrupt program)
Reassign module parameter
Eliminate overload
Check the wiring of the outputs
Check the wiring of the outputs
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