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K-Cube Stepper Motor Controller
Output Trigger Modes
When the
Trig 1 Mode
and
Trig 2 Mode
parameters are configured as outputs, the
TRIG ports can be used as a general purpose digital output, or to indicate motion
status or to produce a trigger pulse at configurable positions as follows:
Digital Output
- General purpose logic output (set using the LLSetGetDigOPs
method).
Trig Out In Motion
- Trigger output active (level) when motor 'in motion'. The output
trigger goes high (5V) or low (0V) (as set in the Trig 1. Polarity and Trig. 2 Polarity
parameters) when the stage is in motion.
Trig Out Max Vel
- Trigger output active (level) when motor at 'max velocity'.
Trig Out Pos. Steps Fwd
- Trigger output active (pulsed) at pre-defined positions
moving forward. Only one Trigger port at a time can be set to this mode. See
Trigger Out Position Steps for further details.
Trig Out Pos. Steps Rev
- Trigger output active (pulsed) at pre-defined positions
moving backwards. Only one Trigger port at a time can be set to this mode. See
Trigger Out Position Steps for further details.
Trig Out Pos. Steps Both
- Trigger output active (pulsed) at pre-defined positions
moving forwards and backward. Only one Trigger port at a time can be set to this
mode. See Trigger Out Position Steps for further details.
Trigger Out Position Steps
In the last three modes described above, the controller outputs a configurable number
of pulses (set in the
Num. Pulses Fwd
and
Num. Pulses Rev
parameters), of
configurable width (
Trig Pulse Width
), when the actual position of the stage matches
the position values configured as the Start Position and Position Interval (
Start Pos.
Fwd
and
Start Pos. Rev
. These modes allow external equipment to be triggered at
exact position values.
Using the last three modes, position triggering can be configured to be unidirectional
(
Trig Out Pos. Steps Fwd
or
Trig Out Pos. Steps Rev
) or bidirectional (
Trig Out Pos.
Steps Both
). In bidirectional mode the forward and reverse pulse sequences can be
configured separately. A cycle count setting (
Num. of Move Cycles
) allows the uni- or
bidirectional position triggering sequence to be repeated a number of times.
Note
If the trigger mode is not set to one of the three position modes described
previously, then the following parameters are not applicable and will be
greyed out.