Digital modules
8.7 SM 326; F-DO 10 x DC 24V/2A PP (6ES7326-2BF10-0AB0)
Fail-safe signal modules
174
Installation and Operating Manual, 01/2010, A5E00085586-10
Possible diagnostic messages
The following table provides an overview of the diagnostic messages for SM 326; F-
DO 10 x DC 24V/2A PP.
Diagnostic messages are assigned either to a channel or to the entire module. Some
diagnostic messages occur only in certain applications.
Table 8- 25 Diagnostic messages of SM 326; F-DO 10 x DC 24V/2A PP
Diagnostic message
Signaled in the
application
Effective
range of
diagnostics
Assignabl
e
Wire break
Yes
Short-circuit of output to M, or defective output
driver
5, 6
Channel
Short circuit of output to L+, or defective output
driver
5
Module
Module parameters not assigned
Incorrect module parameters
Communication error
Internal supply voltage of the module failed
Time monitoring activated (watchdog)
EPROM fault; RAM fault
Internal error in read circuit/test circuit, or defective
sensor supply
Processor failure
Parameter assignment error (with specification of a
consecutive number)
No external auxiliary voltage
External load voltage missing
Defective main switch
Defective output driver
Overtemperature at output driver
Module
Defective load voltage or load voltage not
connected
5, 6
Channel
group
CRC signature error
Timeout of safety message frame monitoring
Module
Switching frequency too high
5, 6
Channel
No