Error Information At The Outputs Of The Driver Blocks - Siemens SIMATIC S7 F Manual

Fail-Safe Blocks
8.15.2

Error Information at the Outputs of the Driver Blocks

The following errors are detected at the outputs of the F module drivers (F_M_DI8,
F_M_DI24, F_M_DO10, F_M_DO8 and F_M_AI6):
Output Cause
DIAG_n Diagnostic information for SM n:
Byte 0
•
Bit 0: TIMEOUT error on SMn
•
Bit 1: Common error on SMn
•
Bit 2: CRC value/watchdog error on SMn Compare the CRC_IMPx parameter with
•
Bit 3: Reserved
•
Bit 4: TIMEOUT error on CPU
or internal CPU fault
•
Bit 5: Watchdog error on CPU
or internal CPU fault
•
Bit 6: Check value error (CRC) on CPU
or internal CPU fault
•
Bit 7: Reserved
8-132
Remedies
Check the set monitoring time in
HWCONFIG
Check the PROFIBUS connection between
the CPU and F-I/O
Read out the module diagnosis
Check the wiring
Read out the module diagnosis
the corresponding CRC check sum
parameters from HWCONFIG
Download the configuration from
HWCONFIG, compile the changes to the
Safety Program , download them again,
and carry out a cold restart.
Switch the voltage off and on at the F-I/O
Check the PROFIBUS connection between
the CPU and F-I/O
Read out the module diagnosis
Check the PROFIBUS connection between
the CPU and F-I/O
Download the configuration from
HWCONFIG, compile the changes to the
Safety Program , download them again,
and carry out a cold restart.
Read out the module diagnosis
or replace the CPU
Check the PROFIBUS connection between
the CPU and F-I/O
or replace the CPU
Compare the CRC_IMPx parameter with
the corresponding CRC check sum
parameters from HWCONFIG
Download the configuration from
HWCONFIG, compile the changes to the
Safety Program, download them again,
and carry out a cold restart.
Switch the voltage off and on at the F-I/O
or replace the CPU
Fail-Safe Systems
A5E00085588-03