3 - 20 ONline Ethernet 10BASE-FL Installation and O peration Guide
Verifying the LED and Network Assignments
Once you install the module, verify its operation through the front panel of
the ONline Controller Module. The Controller Module is equipped with an
LED check button on the front panel. Use the LED check bu tton to:
❑Verify LED operation
❑Verify network (channel) assignment
When you press this button, the Controller Module initiates a test to all
modules in the concentrator. All LEDs should respond by lighting
continuously for approximately five seconds. Any LED that does not light is
defective.
After the 5 seconds elapse, the diagnostic continues with a network
(channel) check of all modules. Each Status LED should respond by blinking
the number of times to correspond with the network to which the module
is assigned. The network check sequence repeats five times. Table3-6
explains the network check codes.
Table3-6. Netwo rk Check Codes
LED State Module Is Configured for...
1 Blink Network 1
2 Blinks Network 2
3 Blinks Network 3
Off Isolated mode (operates independent of any network)