User manual

Publication CNET-UM001C-EN-P - November 2005
8-22 Troubleshoot Your ControlNet Communication Modules
This table describes the 1794-ACN15 and 1794-ACNR15 module
status indicators.
Table 8.11 1794-ACN15 and 1794-ACNR15 Module Status Indicators
If Either Channel
Status Indicators Are
It Means Take This Action
Off No power Apply power.
Steady red Faulted module 1. Cycle power.
2. If the fault persists, contact your Rockwell
Automation representative or distributor.
Alternating red/green The module is performing a self-test None
Alternating red/off Incorrect node configuration Check the module’s network address and other ControlNet
configuration parameters.
(1)
UMAX is the highest node address on a ControlNet network that can transmit data.
If The Module Status
Indicator Is:
It Means Take This Action
Off Module not communicating due to a power
supply fault or internal fault.
1. Check the power supply.
2. Check the cable connectors.
3. Make sure the module is properly installed on the
DIN rail.
4. If the indicator remains off, replace the module.
Steady green Connections established None
Flashing green No connections established Establish connections, if necessary.
Steady red Major fault 1. Cycle power.
2. If the problem persists, replace the daughtercard.
Flashing red I/O module removed Reinsert the module.
Wrong I/O module inserted Replace the wrong module with the correct module.
FLASH program update in progress Wait for the program update to finish.