Siemens SIMATIC ET 200S M151-3 PN Manual page 44

Interrupt, error, and system messages
4.1 Diagnostics using LED display
Principle of operation
The information about the cause of the problem is determined by means of the LED fault
display. After an announcement by means of a flashing signal, the respective error type and
after that the error location / error code are displayed.
The LED fault display of the configuration and parameter assignment errors
● Is activated both during POWER ON and during operation.
● Takes precedence over all other states that are displayed by the SF and BF LED.
● Remains activated until the cause of the problem has been eliminated.
After a change in the ET 200S configuration, a POWER OFF/POWER ON is required at the
interface module.
Procedure
1
2
3
4
5
6
Error display
Error type
(BF)
1
44
LEDs SF and BF flash 3x at 0.5 Hz
LED BF flashes at 1 Hz
LEDs SF and BF flash 3x at 2 Hz
LED SF flashes at 1 Hz
LED BF flashes at 1 Hz
Repetition of 1 - 5 until the cause of the problem has been eliminated.
Error location
(SF/BF)
01 to 63 (slot)
Description
Announcement of error type
Display of the error type (decimal)
Announcement of the error location / error code
Display of the decade (decimal) of the error location /
error code
Display of the unit position (decimal) of the error
location / error code
Cause of error
Communication interruption
Displays the first slot at which no I/O
module is recognized.
Missing I/O module during

POWER ON or several I/O
modules are missing during
operation.
Interruptions at the rear panel bus

Short-circuit at the rear panel bus

("01" is output as the slot)
Terminating module missing

If the termination module is
missing, the number of inserted
I/O modules + 1 is output (if there
is no set configuration)
Interface module IM151-3 PN HIGH FEATURE (6ES7151-3BA23-0AB0)
Remedy
Check the configuration of the
ET 200S.
Manual, 08/2010, A5E01584258-04