Siemens IM 155-6 PN ST Equipment Manual page 31

Table 5- 4
Sequence
1 The ERROR and MAINT LEDs flash 3x at 0.5 Hz
2 MAINT LED flashes at 1 Hz
3 The ERROR and MAINT LEDs flash 3x at 2 Hz
4 The ERROR LED flashes at 1 Hz
5 The MAINT LED flashes at 1 Hz
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 type
(MAINT)
1
* 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
IM 155-6 PN ST interface module (6ES7155-6AU01-0BN0)
Equipment Manual, 10/2020, A5E03576904-AE
Display of error type and error location
Error display
Error location Cause of error
(ERROR/MAINT)
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.
65*
• Missing server module
• Interruptions at the backplane bus
• Short circuit of communication on
the backplane bus
Interrupts, diagnostics, error, and system messages
5.1 Status and error displays
Description
Signaling of error type
Display of the error type (decimal)
Signaling of error location/error code
Display of tens digit (decimal) of the error loca-
tion/error code
Display of ones digit (decimal) of the error loca-
tion/error code
Remedy
Check the configuration
of the ET 200SP.
29