Table of Contents
Advertisement
8-12
Troubleshoot Your ControlNet Communication Modules
Publication CNET-UM001C-EN-P - November 2005
Interpret Status Indicators
Use the following status indicators to determine how your CompactLogix
1769-L32C or 1769-L35CR controller is operating on the ControlNet
network:
• Module Status
• Network Channel Status
These status indicators provide information about the controller and the
network when the controller is connected to ControlNet via the BNC
connectors. describes the possible conditions for module and network status
indicators.
• 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 flash, they must flash together, in phase.
Keep in mind that the Module Status indictor reflects the
IMPORTANT
module state such as self-test, firmware update, or normal
operation but no connection established. The network
status indicators, A and B, reflect network status.
Remember that the host is able to engage in local
messaging with the card although it is detached from the
network. Therefore, the Module Status LED is flashing
green if the host has successfully started the card. Note,
however, that until the host removes reset, all LEDs on the
daughtercard will remain off.
When you view the indicators, always view the Module
Status indicator first to determine the state of the
daughtercard. This information may help you to interpret
the network status indicators. As a general practice, view all
status indicators (Module Status and Network Status)
together to gain a full understanding of the daughtercard's
status.
Hide quick links:
Advertisement
Table of Contents
