6BChapter Three: Overview
64BTop Panel Components
39
when the visual indicator is on. (Refer to
Visual Indicator
, page 77, for more information.) If a
fault condition is detected, the Module Status LED illuminates a solid red.
Table 14: Module Status LED Indicators
LED State
Meaning
OFF
Power is OFF
Flashing Red/Green
Initializing
Solid Green
System functioning normally
Flashing Green
Visual Indicator ON
Solid Red
Major Unrecoverable Fault
Network Status LED
The Network Status LED
indicates the status of the communications link, as defined in Table 15.
If no problems are detected, the Network Status LED illuminates a solid green; the LED flashes
green when the device is on-line but is not connected to other units. If a fault condition is
detected, the Network Status LED illuminates a solid red or turns off.
Table 15: Network Status LED Indicators
LED State
Meaning
Solid Green
Communications link is OK.
The device is on-line and has connections in the established state.
Flashing Green
Device is on-line but has no connections in the established state.
The device has passed the Dup_MAC_ID test and is on-line, but has no
established connections to other nodes.
Solid Red
Critical link failure.
The device has detected an error that has rendered it incapable of
communicating on the network (duplicate MAC_ID or bus-off).
OFF
Not powered/not on-line.
The device has not completed the Dup_MAC_ID test, or the device may
not be powered. Check the Module Status LED.
Data Rate and Node Address Switches
The data rate and node address for your device can be set through software commands using
standard DeviceNet protocol over the network, or manually using the rotary switches located on
the top panel of the device (Figure 5, page 38). The data rate and node address switches allow
you to easily configure units without an operational network, or to network multiple units
quickly.
The rotary switches support an assigned
network
position, labeled on the device as “PGM” to
indicate software operation.
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