Error and system messages
4.1 LED displays on the interface module
IM151-1 FO STANDARD interface module (6ES7151-1AB05-0AB0)
34
Manual, 02/2010, A5E01075965-03
Event (LEDs)
SF
BF
ON
Cause
Remedy
*
On
On
Transmission rate detection, illegal
PROFIBUS address, or bottom DIP switch
(PROFIBUS address) not in the OFF
position.
Causes:
The response monitoring interval has
elapsed.
Bus communication to the interface
module via PROFIBUS DP is interrupted.
Set a valid PROFIBUS address (1 to 125) on
the interface module or check the bus
configuration.
Check that the bus connector is correctly
inserted.
Check whether the connecting cable to
the DP master has been disconnected.
Switch the 24 V DC supply voltage on
and off again at the interface module.
Parameter "Operation with preset <> actual
configuration" enabled:
The configured structure of the ET 200S
does not match the actual structure of the ET
200S.
Parameter "Operation with preset <> actual
configuration" disabled:
See
LED display of the configuration and
parameter assignment errors
Check the structure of the ET 200S for
missing or defective modules or whether an
unconfigured module is inserted.
Check the configuration (using COM
PROFIBUS or STEP 7, for example) and
correct the parameter assignment error.
On
*
On
There is an error in an I/O module, or the
interface module is defective.
Replace the interface module, or contact
your Siemens representative.
Off
Off
On
Data exchange is taking place between the
DP master and the ET 200S.
The set configuration and actual
configuration of the ET 200S match.
---
* Not relevant
LED display of the configuration and parameter assignment errors
Properties
The configuration and parameter assignment errors of the ET 200S distributed I/O system
are output at the interface module by means of the LEDs group error SF (red) and bus error
BF (red).
Prerequisites
For the IM151-1 FO STANDARD, the function is available as of order number 6ES7151-
1AB05-0AB0:
