Rockwell Automation 1747-SCNR SLC ControlNet Scanner Module Installation Instructions - Manual (Page 19)

SLC ControlNet Scanner Module 19
Publication 1747-IN059C-EN-P - September 2001
Status Indicators
The ControlNet status indicators inform you of the operational state
of the ControlNet network.
Indicator
Color
1 Probable Cause Recommended Action
A and B
Off No power No action required or apply power.
Steady Red Faulty unit Cycle power or reset unit. If fault
persists, contact your Rockwell
Automation representative or
distributor.
Alternating
Red/Green Self-test No action required.
Alternating
Red/Off Incorrect node
configuration or
duplicate
ControlNet node
address Check network address and other
ControlNet configuration parameters.
A or B
Off Channel disabled Program network for
redundant media, if required.
Steady
Green Normal operation No action required.
Flashing
Green/Off Temporary network
errors
•
Check media for broken cables, loose
connectors, missing terminators, etc.
•
If condition persists, refer to ContolNet
Cable Planning and Installation
Manual, publication 1786-6.2.1.
Flashing
Red/Off Media fault
•
Check media for broken cables, loose
connectors, missing terminators, etc.
•
If condition persists, refer to ContolNet
Cable Planning and Installation
Manual, publication 1786-6.2.1.
No other nodes
present on network Add other nodes to the network.
Flashing
Red/Green Incorrect node
address Change 1747-SCNR node address so that
it is less than or equal to SMAX
2 .
Incorrect network
configuration Reconfigure ControlNet network so that
SMAX
2 is greater than or equal to
1747-SCNR node address.
1. Definition of terms:
steady - indicator is on continuously in the defined state.
alternating - the two indicators alternate between the two defined states at the same time (applies to
both indicators
viewed together); the two indicators are always in opposite states, out of phase.
flashing - the indicator alternates between the two defined states (applies to each indicator viewed
independent of the other); if both indicators are flashing, they flash together, in phase.
2. SMAX is the highest node address on a ControlNet network that can transmit scheduled data.