Siemens SIMATIC ET 200S - Page 173

Commissioning and Diagnostics
6-13
ET 200S Distributed I/O System
EWA-4NEB 780602402-12
Table 6-6 Status and error displays using LEDs on the IM151-1 BASIC / IM151-1 STANDARD/
IM151-1 FO STANDARD / IM151-1 HIGH FEATURE
SF: red
BF: red
ON:green
SF
BF
ON
LEDs Meaning Remedy
SF BF ON
* on on Transmission rate detection, illegal
PROFIBUS address, or bottom DIP
switch (PROFIBUS address) not in the
OFF position.
Causes:
• The response monitoring time has
elapsed.
• Bus communication to the
interface module via PROFIBUS
DP has been interrupted.
Set a valid PROFIBUS address
(1 to 125) at the interface module, or
check the bus configuration.
• Check that the bus connector is
correctly inserted.
• Check if the interconnecting cable
to the DP master has been
interrupted.
• Switch the 24 VDC supply voltage
on and off again at the interface
module.
on * on The c onfigured setup of the ET 200S
does not match the actual setup of the
ET 200S.
Check the setup of the ET 200S,
whether a module is missing or
defective, or whether an unconfigured
module is inserted.
Check the configuration (using COM
PROFIBUS or STEP 7, for example),
and correct the parameter assignment
error.
There is an error in an I/O module, or
the interface module is defective.
Replace the interface module, or get in
touch with your Siemens contact
person.
Off Off on Data transfer is taking place between
the DP master and the ET 200S.
The target configuration and actual
configuration of the ET 200S match.
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* Not relevant