Siemens SIMATIC FM 353 Manual page 307

Meaning of the status and error displays
The status and error displays are explained in the order in which they are arranged
on the FM 353.
Table 11-3 Status and error displays
Display Meaning
SF (red) Group errors
LED-ON
5 V DC (green) Power supply
switched on
DIAG (yellow) Diagnostics
LED-ON
LED-blinking
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
This LED indicates an error condition in the FM 353.
Diagnostic interrupt (internal error, external error or external chan-
nel error)
To eliminate the error see Error List, Table 11-4.
This LED indicates that the hardware is ready for operation.
If not illuminated, this may indicate one of the following condi-
tions:
S
Your line voltage is not OK.
S
Load current supply is faulty.
S
Module is incorrectly connected.
S
Your control circuit is configured incorrectly (sum of rated and
starting currents is too great), or
S
The module is faulty.
This LED indicates the various diagnostic conditions.
Diagnostic interrupt (external channel error).
To eliminate the error see Error List, Table 11-4.
If this LED blinks when the LED "SF" is simultaneously activated,
this indicates a system error. If this occurs, then please consult the
appropriate sales department. The exact circumstances which re-
sulted in the error are of major importance in this case.
Troubleshooting
Explanations
11-5