Siemens SIMATIC MV500, Operating Instructions Manual, Page: 234 / 294

Service and maintenance
10.1 Error and diagnostics messages
SIMATIC MV500
234
Operating Instructions, 03/2021, C79000-G8976-C494-05
LED
labeling
Meaning Description and corrective measures
ER Red, permanently on:
The optical reader is in "Group error" mode
Possible causes when working with onboard
PROFINET IO:
•
Bus communication is interrupted.
• Bus error (no physical connection to a
subnet / switch).
• Wrong transmission speed,
Full duplex transmission is not enabled.
• The IP address is incorrect.
• Bad configuration.
• Bad parameter assignment.
• Bad or missing device name.
• I/O controller not available / switched off.
Start the WBM to view the error message. Perform the sug-
gested corrective measures in the section "Error messages
(Page 224)".
•
Check whether the IP address or device name occurs
more than once in the network.
• Check the settings of the I/O controller.
R/S Permanently off:
The optical reader is in "Stop" mode.
No error
Green, permanently on:
The optical reader is in "RUN" mode.
No error
LK Permanently off:
There is no Ethernet connection to the opti-
cal reader.
• Check the connection to the Ethernet cable.
• Check whether the connected switch or other communi-
cations partner is operational.
• Check or replace the Ethernet cable.
Green, permanently on:
An Ethernet connection without data traffic
is available.
In order to start the WBM of the optical reader, you also
need a valid network configuration for TCP/IP. Here, for
example, you can use the SINEC PNI to create a valid net-
work configuration for TCP/IP.
Green flashing:
The optical reader is exchanging data.
No error
READ Green flashing:
The read result is valid.
No error
The reading was successful and the read result is valid (OK).
Yellow, flashing:
The read result ended with a MATCH error.
The reading was successful, but the result comparison
showed a deviation from the default (MATCH error).
Red, flashing:
The read result is invalid (N_OK).
The reading was unsuccessful or the read result is not valid
(N_OK).
Possible causes:
•
The expected codes were not in the image.
• The processing time was not sufficient.
• A test condition could not be fulfilled.