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Nomenclature and Functions Section 2-1
Seven-segment Display
The 7-segment display indicates the NE1A-series Controller’s node address
during normal conditions, and the error code and the node address of the
error during error conditions. Also, “nd” is displayed during normal conditions
if DeviceNet communications are disabled (i.e., Standalone Mode).
Note The errors are indicated by the combination of the MS indicator, NS indicator,
and the 7-segment display. For further details on specific meanings, refer to
Section 10 Troubleshooting.
Status Display
Normal conditions
with DeviceNet
enabled
Operating mode: RUN mode
Safety I/O communications: Operating or not set.
Shows the NE1A-
series Controller’s
node address
(00 to 63).
Lit
Operating mode: RUN mode
Safety I/O communications: Not operating
Flashing
Operating mode: Self-testing, configuring, or idle Flashing
Normal conditions
with DeviceNet
disabled
Operating mode: RUN mode "nd" Lit
Operating mode: Self-testing, configuring, or idle Flashing
Error conditions Critical error Indefinite
Only error code Lit
Abort Only error code Lit
Nonfatal error Alternates between displaying the error
code and the node address where the
error occurred.
!WARNING
Serious injury may possibly occur due to loss of required safety functions.
Do not use the NE1A-series Controller's indicators for safety operations.
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