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Reference. The value of the outputs can be checked with the operand _OP and the function @OUT[]
(see Chapter 7, Mathematical Functions and Expressions).
The output compare signal is TTL and is available on the ICM-1460 as CMP. Output compare is
controlled by the position of any of the main encoders on the controller. The output can be
programmed to produce an active low pulse (1usec) based on an incremental encoder value or to
activate once when an axis position has been passed. For further information, see the command OC in
the Command Reference.
There are four status LEDs on the controller which indicate operating and error conditions on the
controller. Below is a list of those LEDs and their functions.
Green Power LED
-
The green status LED indicates that the +5V power has been applied properly
to the controller.
Red Status/Error LED - The red error LED will flash on initially at power up, and stay lit for
approximately 1 – 8 seconds. After this initial power up condition, the LED will
illuminate for the following reasons:
1. At least one axis has a position error greater than the error limit. The error limit is set
by using the command ER.
2. The reset line on the controller is held low or is being affected by noise.
3. There is a failure on the controller and the processor is resetting itself.
4. There is a failure with the output IC which drives the error signal.
Green Link LED – The second green LED is lit when there is an Ethernet connection to the
controller. This LED tests only for the physical connection, not for an active or enabled
link.
Yellow Activity LED – The yellow LED indicates traffic across the Ethernet connection. This
LED will show both transmit and receive activity across the connection. If there is no
Ethernet connection or IP address assigned, the LED will flash at regular intervals to
show that the BOOTP packets are being broadcast.
DMC-14x5/6
Chapter 3 Connecting Hardware
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