Siemens 6ES7155-6AA01-0BN0 - Page 31

Interrupts, diagnostics, error, and system messages
5.1 Status and error displays
IM 155-6 PN ST interface module (6ES7155-6AU01-0BN0)
Equipment Manual, 10/2020, A5E03576904-AE
29
Table 5- 4 Display of error type and error location
Sequence
Description
1
The ERROR and MAINT LEDs flash 3x at 0.5 Hz
Signaling of error type
2
MAINT LED flashes at 1 Hz
Display of the error type (decimal)
3
The ERROR and MAINT LEDs flash 3x at 2 Hz
Signaling of error location/error code
4
The ERROR LED flashes at 1 Hz
Display of tens digit (decimal) of the error loca-
tion/error code
5
The MAINT LED flashes at 1 Hz
Display of ones digit (decimal) of the error loca-
tion/error code
6
Repeat steps 1 to 5 until the cause of the error has been corrected.
Error display
The following table shows the possible causes of error that can occur.
Table 5- 5 Error display
Error type
(MAINT)
Error location
(ERROR/MAINT)
Cause of error Remedy
1
02 to 32*
The number of pulled I/O modules is
displayed. The diagnostics data is gen-
erated starting with two pulled I/O
modules.
Check the configuration
of the ET 200SP.
65*
• Missing server module
• Interruptions at the backplane bus
• Short circuit of communication on
the backplane bus
* Slot
Note
A short circuit in the backplane bus supply or the bus connection supply is indicated by the
following LEDs:
•
PWR LED: On
•
RN-, ER and MT LED: Off