Diagnostics Using Leds; Status And Error Leds On The Im - Siemens SIMATIC ET 200M Manual

Commissioning and Diagnostics
6.2

Diagnostics Using LEDs

IM 153-1
Table 6-5

Status and error LEDs on the IM 153-1

SF
SF (group fault):
BF
BF (fault at PROFIBUS):
ON (supply voltage available):
ON
LEDs
SF BF ON
Off Off Off There is no voltage applied to the
IM 153-1, or the IM 153-1 has a hardware
defect.
* * On There is voltage applied to the IM 153-1.
* On The IM 153-1 is incorrectly parameterized
Flashes
– there is no data transfer between the DP
master and the IM 153-1.
Causes:
S
Configured and set PROFIBUS
address is incorrect
S
Faults on the bus
* On On No connection to the DP master (baud
rate detection)
Causes:
S
The bus communication via
PROFIBUS-DP to the IM 153-1
has been interrupted.
On On The configured setup of the ET 200M
Flashes
does not match the actual setup of the
ET 200M.
On Off On Invalid PROFIBUS address
Is the SF LED of an SM/FM also on? If so:
There is an error or diagnosis in an
S7-300 module
If not: The IM 153-1 is defective.
Off Off On Data transfer is taking place between the
DP master and the ET 200M.
The desired configuration and actual
configuration of the ET 200M match.
* Not applicable
6-10
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Meaning
Switch on the power supply module or
change the IM 153-1.
–
S
S
S
S
S
Check the bus setup.
S
S
S
Check the PROFIBUS address and the
ET 200M configuration, to find out if a
module is missing or defective or whether
an unconfigured module is inserted.
Check the configuration (for example with
COM PROFIBUS or STEP 7).
Set a valid PROFIBUS address (1 to 125)
on the IM 153-1.
Check the SM/FM with the diagnosis.
Change the S7-300 module or the IM
153-1 or contact your Siemens partner.
–
red
red
green
What to Do
Check the IM 153-1.
Check the configuration and
parameter assignment.
Check the PROFIBUS address on the
IM 153-1 and in the STEP 7 project.
Check the cable length with respect to
the baud rate.
Check the terminating resistor
settings.
Check that the bus connector is
correctly inserted.
Check if the interconnecting cable to
the DP master has been interrupted.
Switch the 24 V DC switch on the
power supply module off and then on
again.
Distributed I/O Device ET 200M
EWA-4NEB780600602-06