Rockwell Automation 1788-CN2FF ControlNet to Foundation Fieldbus H1 Linking Device Installation Instructions - Manual (Page 15)

ControlNet-to-Foundation Fieldbus H1 Linking Device 15
Publication 1788-IN051D-EN-P - February 2004
Interpreting the LEDs: ControlNet Network Status
The ControlNet network status LEDs are located on the front of the 1788-CN2FF, beside
the ControlNet BNC connectors, as shown in Figure 1, Item 3. They indicate the state of the
ControlNet connected to the BNC connectors. These LEDs do not reflect anything about
the status of the network access port (NAP). If more than one state is present, the LEDs
always reflect the highest priority status present on the network. Table 7 describes the LED
states and the priority of each status.
Table 7 ControlNet Network LED Status Descriptions
LED State Priority How to View Cause
Both steady off 1 (highest) View together Reset or no power
Both steady red 2 Failed to link interface to ControlNet
Alternating red & green 3 Self testing
Alternating red 4 Bad node configuration (such as duplicate
ControlNet network address)
Steady off 5 View
independently Channel disabled or not supported
Flashing red & green 6 Invalid link configuration
Flashing red 7 Link fault or no frames received
Flashing green 8 Temporary channel error or listen only
Steady green 9 (lowest) Normal operation