Siemens SIMATIC ET 200S Manual page 148

Commissioning and Diagnostics
Table 6-7 Status and error displays of the IM151-1 BASIC/IM151-1 STANDARD/IM151-1 FO
STANDARD/IM151-1 HIGH FEATURE, continued
SF
SF: red
BF
BF: red
ON
ON: green
LEDs
SF BF ON
* On On
On * On
Off Off On
* Not applicable
6-14
Meaning
Transmission rate detection, illegal
PROFIBUS address, or lowermost 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.
The configured setup of the ET 200S
does not match the actual setup of the
ET 200S.
There is an error in an I/O module, or
the interface module is defective.
Data transfer is taking place between
the DP master and the ET 200S.
The target configuration and actual
configuration of the ET 200S match.
What to Do
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.
Check the setup of the ET 200S,
whether a module is missing or defec-
tive, or whether an unconfigured mod-
ule is inserted.
Check the configuration (using
COM PROFIBUS or STEP 7, for exam-
ple), and correct the parameter assign-
ment error.
Replace the interface module, or get in
touch with your Siemens contact per-
son.
–
ET 200S Distributed I/O System
EWA-4NEB780602402-09