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Diagnostics
5.2 Error Diagnostics
ET 200pro Distributed I/O System - Fail-Safe Modules
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Operating Instructions, 05/2007, A5E00394073-02
Behavior of F-Modules When a Module Failure Occurs
In the event of a fatal internal fault in the F-module resulting in failure of the
F-module, the following occur:
●
The connection to the backplane bus is interrupted and the fail-safe inputs and outputs
are passivated.
● Diagnostics are not issued by the F-module and the standard "Module Fault" diagnostics
message is issued.
● The SF LED of the relevant F-module illuminates.
Specific Information About Diagnostic Functions
All module-specific diagnostic functions, possible causes, and corrective actions are
described in
"8/16 F-DI DC24V PROFIsafe", "4/8 F-DI/4 F-DO DC24V/2A PROFIsafe" to "F-
Switch PROFIsafe".
The status and diagnostic functions indicated by LEDs on the front panel of each F-module
are also presented in these sections.
Reading Out Diagnostic Functions
You can have the cause of a fault displayed in the module diagnostics in STEP 7 (see
STEP 7 online help).
You can read out diagnostic functions (slave diagnostics) by means of SFC 13 in the
standard user program (see System and Standard Functions reference manual).
See also
Diagnostic Functions of the 8/16 F-DI DC24V PROFIsafe Electronic Module (Page 81)
Diagnostic Functions of the 4/8 F-DI/4 F-DO DC24V/2A PROFIsafe Electronic Module
(Page 100)
Properties of the F-Switch PROFIsafe Electronic Module (Page 133)