Siemens SIMATIC Manual page 510

Other signal modules
7.4 Position decoder module SM 338; POS-INPUT; (6ES7338-4BC01-0AB0)
Diagnostic messages of SM338; POS-INPUT
The table below provides an overview of the diagnostic messages of SM 338; POS-INPUT.
Table 7- 5 Diagnostic messages of SM 338; POS INPUT
Diagnostic message
Module error
Internal error
External error
Channel error
External auxiliary voltage missing
Module not programmed
Incorrect parameters
Channel information available
Watchdog time-out
Channel error
Configuration / programming error
External channel error (encoder error)
Causes of error and troubleshooting
Table 7- 6 Diagnostic messages of SM 338, causes of error and troubleshooting
Diagnostic message
Module error
Internal error
External error
Channel error
External auxiliary voltage
missing
Module not programmed
Incorrect parameters
Channel information avail-
able
Watchdog time-out
Channel error
Configuration / program-
ming error
External channel error
(encoder error)
510
Possible cause of error
Any, the module has detected an error.
Module has detected an error within the
automation system.
Module has detected an error outside of the
automation system.
Indicates that only specific channels are
faulty.
Supply voltage L+ of the module is missing
Module requires information whether it
should operate with default system parame-
ters or user parameters.
One parameter, or the combination of pa-
rameters, is not plausible
Channel error; module can provide additional
channel information.
Infrequent high electromagnetic interference
Any, the module has detected an error at the
encoder input.
Illegal parameter transferred to module
Wire-break at encoder cable, encoder cable
not connected, or encoder defective.
LED Scope of diagnostics
SF Module
SF Module
SF Module
SF Module
SF Module
SF Module
SF Module
SF Module
SF Module
SF Channel (encoder input)
SF Channel (encoder input)
SF Channel (encoder input)
To correct or avoid error
Feed supply L+
Message present after power on, until the
CPU has completed the transfer of parame-
ters; configure the module as required.
Program the module
Eliminate interference
Program the module
Check connected encoder
Manual, 06/2017, A5E00105505-AJ
S7-300 Module data