Delta Controls DZNR-768 Installation Manual page 23

LED Indication
If the DZNR shows network instability and/or frequently locks out, do not attempt a flash
upgrade to any devices on the network. The flash load could fail and the device will
require factory service.
DZNR-768 Revision 1.2 Installation Guide
Document Edition 1.5
Network Condition
Multiple errors on one or
more segments.
Segment communications
is being blocked by the
DZNR.
Possible Problem
A wiring error or shorted
wiring exists on segment.
More than one device is
communicating at the same
time.
A group of devices using the
same power source are not
sharing a common ground.
DZNR is attempting to correct
a segment fault by blocking
that port for 120 seconds.
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