ElmoMC SimplIQ Digital Servo Drives-Bell Command Reference - Manual (Page 123)

Index Description
6 Output Compare Source Signal
0: Output Compare on Main feedback
1: Output Compare on Auxiliary feedback
2: Output Compare on Position command
OC[1] returns the following values:
-3 Referenced-based comparison has been aborted because the motor has
been shut down.
-2 No more pulses are being generated because the maximum rate has been
exceeded.
-1: No more pulses are being generated because the number of pulses specified
in OC[5] has been reached.
0: Output Compare function is disabled.
1: a. Output Compare at absolute position:
Output Compare function has started but absolute position has
not yet been reached; therefore, the train of pulses has not begun.
b. Immediate Output Compare:
Output Compare function has started but first pulse has not yet
been produced.
2: The train of pulses is being generated now.
Notes:
1. For output compare to work on an auxiliary sensor, it must be set up as a position
sensor input.
2. The Output Compare pulses cannot exceed 10 kHz. Larger rates will cause OC to
abort (OC[1] will return -2).
3. Note that long duration pulses may cause a number of pulses to connect and
produce one overlapping pulse. The drive gives no warning on such occasions.
4. When going in the direction that is opposite to the specified direction with the same
OC[3] value, the compare will not occur.
5. When Output Compare is active, Digital Output #1 is used to produce the train of
pulses. The configuration of this output, as set by OL[1], OB[1] or OP, is ignored.
6. OC[2] = 2 (comparison on position command) is possible only if the motor is on and
the unit mode is 3, 4 or 5. If OC[2] = 2, a motor shut down will also cause the pulse
comparison to be aborted.
7. In order to prevent output of an additional pulse during the activation or
deactivation of the feature, it is recommend to configure the high logic level for
Output #1 (set OL[1]=1) before the OC[] activation.
8. If a setting of OC[1] fails, it still kills any ongoing output compare process.
SimplIQ for Steppers Command Reference Manual Alphabetical Listing
MAN-STECR (Ver. 1.1)
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