27: TROUBLESHOOTING
27-22 OPENNET CONTROLLER USER’S MANUAL
Troubleshooting Diagram 15
Are network cables are
connected correctly?
Call IDEC for assistance.
Is only the
FAIL LED lit on the remote I/O
master module?
NO
Does the
Function Area Setting
match the quantity of connected
slave stations?
NO
Deselect “Configure Communication Mas-
ter Module” on the Open Bus page in the
Function Area Settings in WindLDR or
change the “Quantity of Nodes Connected”
to match the actual quantity of the nodes,
then download the user program to the
OpenNet Controller.
Remote I/O communication is
impossible and the FAIL LED is on.
Power up all remote I/O slave stations.
NO
NO
Are the RDY/RUN
and FAIL LEDs lit on the remote
I/O master module?
Are all remote I/O slave
stations powered up?
NO
YES
YES
Make sure that all cables are connected
correctly using INTERBUS cables.
YES
Monitor special data registers D8178, D8179, D8182, and D8183 to view the remote
I/O system status, error code, and error location. See page 24-10.
YES
NO
End
Initialize the remote I/O network by turning
on special internal relay M8030 (INTERBUS
Master Initialize) or power down and up the
OpenNet Controller CPU module.
Are more than
32 remote I/O slave stations
connected
YES
YES
Make sure that the quantity of connected
remote I/O slave stations is 32 or less.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
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