Troubleshooting With The Devicenet Unit Indicators; Determining Operating Status From The Indicators - Omron CS1W-DRM21 Operation Manual

Troubleshooting with the DeviceNet Unit Indicators

9-1

Troubleshooting with the DeviceNet Unit Indicators

9-1-1

Determining Operating Status from the Indicators

Indicator status
MS NS 7-segment
OFF OFF OFF
ON OFF Master's node
(green) address
(flashing)
ON Flashing Master's node
(green) (green) address
(flashing)
Master's node
address
ON ON Master's node
(green) (green) address
ON ON - - (flashing)
(green) (green)
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The following table shows the status of the MS and NS indicators and the 7-
segment display during normal operation.
Network/Unit status
Initializing with PLC
Checking for node address
duplication
Waiting for remote I/O com-
munications
Waiting for message commu-
nications connection
Remote I/O or message com-
munications in progress.
Scan list operation in
progress.
Comments
Initialization processing with the PLC is in
progress.
Restart the DeviceNet Unit if this status continues
for an extended period of time. Replace the CPU
Unit and/or DeviceNet Unit if the problem is not cor-
rected by restarting.
The node address duplication check is performed
after initialization.
The Unit will have this status until remote I/O com-
munications are performed with the master or slave
function. (When both functions are operating, the
Unit will have this status until remote I/O communi-
cations are performed with either function.)
The Unit will have this status when both the master
and slave functions are disabled and the Unit is
waiting for a connection by message communica-
tions.
This is the normal display when the master and/or
slave is active.
The scan list is being saved in flash memory or the
scan list is being cleared.
Section 9-1