Troubleshooting
11-3
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
11.1 Error classes and module responses
Overview
The FM 353 contains monitoring circuits which are active during startup or during
continuous operation. Errors occurring during those times are reported to the sys-
tem and to the user program.
The table below lists the error classes and their meaning.
Table 11-1 Error classes, overview
Message
Error class Response Significance
Internal errors
... are hardware faults in the module which are discovered
by diagnostics routines (e.g. memory errors).
(see Section 6.3.4 for diagnostic interrupt data and error list,
Table 11-4)
Diagnostic
interrupt
External errors
Everything
OFF
... are errors which can occur due to faulty module connec-
tion (e.g. parameters for initialization of module MPI station
numbers are missing or are incorrect).
(see Section 6.3.4 for diagnostic interrupt data and error list,
Table 11-4)
External
channel errors
... are measurement system errors or errors which can oc-
cur by connecting the digital outputs or during operation
(operator control errors) of the FM 353 (e.g. cable break,
incremental value encoder).
(see Section 6.3.4 for diagnostic interrupt data and error list,
Tables 11-4 and 11-5)
Checkback
Operator con-
trol and travel
errors
Feed
STOP
... are errors (operator/travel errors) which can occur during
operator inputs to the FM 353 (e.g. direction signals R+ and
R− set at the same time, see Error List, Tables 11-6 and
11-7).
signals
Data errors Warning!
... are errors (data, machine data and traversing program
errors) which are detected on interpretation of invalid data
(see Error List, Table 11-8).
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