YASKAWA 1000 Series Installation Manual page 12

4 Option Components
LED
Color Status
COMM
(Communication Green
Status)
BF
(PROFIBUS-DP Red
Error)
12
Display
Operating
Status
Communication
ON
connected
No data
OFF
exchange
Waiting for
ON communication
procedure setting
Communication
Flashing
setting error
Normal
OFF
operation
YASKAWA ELECTRIC TOBP C730600 42D 1000-Series Option SI-P3 Installation Manual
Remarks
Normal send/receive between the option and the
PROFIBUS-DP master.
There is a problem establishing communication between
the option and the PROFIBUS-DP master.
Communication-related parameters are in the process of
being set or initialized by the PROFIBUS-DP master.
Communication parameter error from PROFIBUS-DP
master.
LED shuts off when the PROFIBUS-DP master is finished
setting communication-related parameters.