Siemens SIMATIC S7 F Manual page 326

Fail-Safe Blocks
Error Code (W#16#...) Cause
75E1H Maximum permissible F cycle time exceeded or
internal CPU fault
Error Detected in F_TEST – Command Test
Error Code (W#16#...) Cause
Internal CPU fault
75E1H
8-138
Remedies
•
Restart the Shutdown
logic.
-or-
•
Stop and ColdStart F-
CPU.
-or-
•
Full Download of the
complete program to F-
CPU.
-or-
•
Replace the F-CPU.
-or-
•
Increase the cycle time of
the OB3x containing your
F-run-time Group
experiencing the
maximum cycle time
exceeded
-or-
•
Move functionality out of
the OB3x to another
OB3x. This includes
standard and F-Blocks
that are running within
said F- run-time the OB3x.
Remedies
•
Restart the Shutdown
logic.
-or-
•
Stop and ColdStart F-
CPU.
-or-
•
Full Download of the
complete program to F-
CPU.
-or-
•
Replace the F-CPU.
Fail-Safe Systems
A5E00085588-03