Digital modules
3.29 Digital output module SM 322; DO 8 x DC 24 V/ 0.5 A; with diagnostics interrupt; (6ES7322-8BF00-0AB0)
S7-300 Module data
180 Manual, 06/2017, A5E00105505-AJ
Causes of error and troubleshooting
Table 3- 30 Diagnostic messages of SM 322; DO 8 x DC 24 V/0.5 A, causes of error and troubleshooting
Error detection
condition ...
To correct or avoid error
Wirebreak Only when output
= "1"
Wire-break between the module
Connect the cable
Channel not connected (open) Disable the "wire-break diagnos-
tics" parameter for the channel in
Load voltage missing Only when output
Defective output Replace the module
Short-circuit to M Only when output
= "1"
Short-circuit of output to M
Eliminate the short-circuit
Short-circuit to L+ generally Short-circuit at output to L+ of the
Eliminate the short-circuit
External auxiliary voltage
generally Power supply L+ to module missing Feed supply L+
Internal auxiliary voltage
missing
generally
Power supply L+ to module missing
Watchdog timeout generally Infrequent high electromagnetic
Eliminate the interference
EPROM fault generally Infrequent high electromagnetic
Eliminate interference and cycle
the power supply of CPU off/on.
RAM fault generally Infrequent high electromagnetic
Eliminate interference and cycle
the power supply of CPU off/on.