Delta AH500 - Page 679

Chapter 14 Remote I/O Communication Module AHRTU-PFBS
14-49
14.8 LED Indicator and Trouble-shooting
14.8.1 RUN and NET Indicators

RUN LED
RUN LED displays the work status of AHRTU-PFBS-5A.
LED state
Indication
How to deal with
Green
light ON
AHRTU-PFBS-5A is in
RUN state and is
communicating with
the master.
--
Green
light
flickers
AHRTU-PFBS-5A is in
STOP state and has
not made the
connection with the
master (When the
digital display shows
F1.)
1. Turn the RUN/STOP switch of the master PLC to
RUN
2. Check if AHRTU-PFBS-5A has been configured in
the PROFIBUS DP master configuration software.
3. Check if the communication cable between the
PROFIBUS DP master and AHRTU-PFBS-5A is
normal.
4. Check if the PROFIBUS DP master works
normally.
5. Verify that both of the two ends of the PROFIBUS
DP network have the terminal resistors.
Green
light OFF
No power Check if the power module PS05 works normally.

NET LED
NET LED displays if the connection between AHRTU-PFBS-5A and the PROFIBU DP master is
normal.
LED state
Indication
How to deal with
Green
light ON
The master makes the
connection with the
slave.
--
Red light
ON
AHRTU-PFBS-5A does
not make the connection
with the master (while
reporting F1) or is offline
after making the
connection with the
master (while reporting
F6)
1. Check if AHRTU-PFBS-5A has been connected to
the PROFIBUS DP bus
2. Check if the communication cable between the
PROFIBUS DP master and AHRTU-PFBS-5A is
normal.
3. Check if the actual address of AHRTU-PFBS-5A
is consistent with that configured in the software.
4. Check if the GSD file used is correct.
Green
light OFF
No power Check if the power module PS05 works normally.