ElmoMC SimplIQ Command Reference - Manual (Page 114)

-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. When performing Output Compare on Main Feedback (except incremental encoder)
or on the Auxiliary Feedback, the Auxiliary Feedback entry should be configured as
output (YA[4]=4) before Output Compare is initialized. Activation this function
without setting the Auxiliary Feedback as output causes a “Bad auxiliary sensor
configuration” error.
2. NEVER LET the frequency of Output Compare pulses become greater than 20 kHz
while working on EMULATED FEEDBACK. The feedback is emulated with all
feedbacks modes excluding quadrature encoder or digital halls. Output Compare on
Emulated Encoders works on interrupts and uses software resources, so there is
limited Output Compare signal frequency. If it becomes too high, there will be a
problem with amplifier operation without any indication of error or fault.
Nonetheless, Output Compare on quadrature Incremental Encoder Feedback (not
emulation) is a hardware based feature and has no such limitation.
3. Be aware that long duration pulses 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 opposite the specified direction with the same OC[3]
value, the compare will occur every 65,535 - OC[3] counts.
5. When Output Compare is active, Digital Output #1 is used to produce the train of
pulses. In such a case, any configuration of this output (set by OL[1], OB[1] or OP) is
ignored.
6. 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.
7. In Output Compare at Absolute Position mode (OC[1]=1), the first produced pulse is
longer (OC[4]+50nsec) than other pulses.
8. When working in Absolute Position mode (OC[1]=1), the absolute position which
specified by OC[2] must be at least 10uSec away from the point in which the feature
was activated .
9. The Main or Auxiliary Home capture does not function when Output Compare
works on the same Main or Auxiliary feedback source.
SimplIQ Command Reference Manual Alphabetical Listing
MAN-SIMCR (Ver. 4.5)
3-101