Western Reserve Controls, Inc.
1782-JDO User’s Manual
PRELIMINARY
15
Table 4-1
Module Status LED (labeled MS)
LED State
Module Status
Meaning
OFF
No Power
There is no power through DeviceNet.
Green
Device Operational
JDO is operating normally.
Flashing Green
Device in Standby
JDO needs commissioning (e.g.
attempting Autobaud).
Flashing Red
Minor Fault
Recoverable fault.
Red
Unrecoverable Fault
JDO may need replaced.
Flashing Red/Green
Device Self-Testing
JDO is in self-test mode.
Table 4-2
Network Status LED (labeled NS)
LED State
Network Status
Meaning
OFF
No Power / Not on-line
JDO has no power or has not completed
the Dup_MAC_ID test.
Flashing Green
On-line, not connected
JDO is on-line but is not allocated to a
Master.
Green
On-line
JDO is operating normally.
Flashing Red
Connection time-out
One or more I/O connections are timed out.
Red
Critical link failure
JDO has detected an error that makes it
incapable of communicating on the link.
(Bus off or Duplicate MAC ID).
4.2.2 Serial Port LED’s
The JDO also has two (2) RS-485 activity LED’s: one for transmit (TX) and one for receive
(RX). Each of these will illuminate when there is data communications active on the
respective data lines.
