Interrupt, error and system messages
9.1 PROFIBUS DP
ET 200M
Operating Instructions, 04/2022, EWA-4NEB7806006-09
183
Meaning Remedy
SF BF /
ACT ON
IM 153-2 is incorrectly configured - no
data exchange is taking place between the
DP master and the IM 153-2.
Causes:
• PROFIBUS address is incorrect
• Faults on the bus.
• Check the IM 153-2.
• Check the configuration and parameter
settings.
• Check the PROFIBUS address on the IM
153-2 and in the STEP 7 project.
• Check the cable length with reference
to the baud rate.
• Check the settings for the terminating
resistors.
no connection to the DP master (search
baud rate)
Causes:
• the bus communication via PROFIBUS
DP to the IM 153-2 has been interrupt-
ed
Check the bus configuration.
• Check to see if the bus connector / FOC
is inserted properly.
• Check whether the bus cable / FOC to
the DP master is defective.
• Switch off and on the on / off power
switch for the 24 V DC on the power
supply module.
The configured structure of the ET 200M
doesn´t tally with the actual structure of
the ET 200M
Check the configuration of the ET 200M to
see if a module is missing, faulty or if there
is a non-configured module.
Check the configuration (e.g. with
inadmissible PROFIBUS address
Is the SF LED of an SM / FM also lit?
• If so: Error or diagnosis in an S7 300
module
• If not: IM 153-2 is faulty.
On the IM 153-2 set a valid PROFIBUS
address (1 to 125)
Check the SM / FM with the diagnostics.
Replace the S7-300 module or the IM 153-
2 or contact your Siemens representative.
The IM 153-2 is exchanging data with the
DP master and the I/O modules of the ET
200M.
In redundant mode this IM 153-2 is the
active one of the ET 200M.
There is voltage on the IM 153-2.
In redundant mode this IM 153-2 is the
passive one, i.e. no data exchange with
at
0.5 Hz
In redundant mode, this IM 153-2 is the
passive, and is not ready for a fault-free
changeover (e.g. associated CPU in STOP
Switch the H system to redundant mode.
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