Omron C200HW-PRM21 Operation Manuals page 87

LEDs
PROFIBUS-DP status LEDs (only valid when RUN LED is ON)
LED Colour
READY Green
Flashing
COMM Green
NW-ST Green
Flashing
DP-ERR Red
Flashing
State Description
OFF PROFIBUS-DP fatal error
Configuration download in progress
IR n+2.14 and IR n+2.15 are OFF (Offline)
ON The Unit is ready to communicate.
OFF The master does not get any positive reply
back from the slaves during the polling
procedure. No I/O data is being exchanged
with DP-slaves.
ON The master does get at least one positive reply
back from one of the slaves in the network.
This does not automatically mean that I/O data
is being exchanged!
OFF Network state is Offline or Stop
IR n+2.14 = 0
Network state is Clear
IR n+2.14 = 1, IR n+2.15 = 0
ON Network state is Operate
IR n+2.14 = 1, IR n+2.15 = 1
OFF No PROFIBUS-DP specific errors and no fatal
PLC error detected.
At least one of the DP slaves is in error or is
not configured correctly (See also IR n+2.02,
n+2.03).
ON Configuration error is detected, RUN LED or
READY LED is flashing (see also IR n+3).
Download the configuration again.
Section 5-4
71