User manual

Publication CNET-UM001C-EN-P - November 2005
Troubleshoot Your ControlNet Communication Modules 8-21
1794-ACN15 and
1794-ACNR15 ControlNet
FLEX I/O Adapters
This figure shows the status indicators used on the 1794-ACN15 and
1794-ACNR15 modules.
Figure 8.6 1794-ACN15 and 1794-ACNR15 Status Indicators
The modules use the following 2 status indicators:
• Comm - Communication status indicator for each channel; the
1794-ACN15 module has 1 Comm indicator, and the 1794-ANCR15
module has 2 Comm indicators
• Status - Module status indicator
This table describes the 1794-ACN15 and 1794-ACNR15 communication
status indicators.
Table 8.10 1794-ACN15 and 1794-ACNR15 Communication Status Indicators
43610
Network Channel Status Indicators
This graphic shows a 1794-ACNR15.
Module Status Indicators
If Both Channel
Status Indicators Are
It Means Take This Action
Off Channel disabled Program network for redundant media, if necessary.
Steady green Normal operation None
Flashing green/off Temporary network errors 1. Check media for broken cables, loose connectors,
missing terminators.
2. If condition persists, refer to the ControlNet Coax
Media Planning and Installation Manual, publication
CNET-IN002.
Node is not configured to go online Make sure the network keeper is present and working and
the selected address is less or equal to the UMAX
(1)
.
Flashing red/off Media fault 1. Check media for broken cables, loose connectors,
missing terminators.
2. If condition persists, refer to the ControlNet Coax
Media Planning and Installation Manual, publication
CNET-IN002.
No other nodes present on network Add other nodes to the network.
Flashing red/green Incorrect network configuration Reconfigure the ControlNet network so that UMAX is greater
than or equal to the module’s node address.