LMI Gocator 2000 Family, User Manual

Page: 97 / 194

Output • 97 Gocator 2000 Family
5 Specify a pulse width.
The pulse width determines the duration of the digital output pulse, in microseconds.
6
Specify if the output is scheduled.
A pulsed digital output can be immediate or scheduled. Immediate output becomes active as soon as the
measurement results are available. The output activates after the Gocator finishes processing the data. As
a result, the time between the start of Gocator exposes and output activates depends on the processing
time, which is reported as the processing latency in the dashboard (and thru health messages).
Scheduled output becomes active after a specified delay from the start of Gocator exposure.
7 Specify a delay
The delay specifies the time or spatial location between the start of Gocator exposure and the output
becomes active. The delay should be larger than the time needed to process the data inside the Gocator.
It should be set to a value that is larger than the processing latency reported in the dashboard and in the
health messages.
The unit of the delay is configured in the trigger panel. Refer to Trigger section (page 46) for details.
Refer to the Specifications section (page 162) in this guide for information on wiring digital outputs to
external devices.
To output a measurement valid signal:
1
Navigate to the Digital Output 0 or Digital 1 Panel. Select Measurement as Event.
Select “Always” in Assert On.
2
Specify a pulse width.
The pulse width determines the duration of the digital output pulse, in microseconds.
To respond to software scheduled commands:
1 Navigate to the Digital Output 0 or Digital 1 Panel. Select Software as Event.
2
Specify a signal type.
The signal type specifies whether the digital output is a continuous signal or a pulsed signal. If the signal is
continuous, its state is maintained until the next transition occurs. If the signal is pulsed, user specifies the
pulse width and the delay.
3 Specify a pulse width.
The pulse width determines the duration of the digital output pulse, in microseconds.
4 Specify if the output is scheduled.
A pulsed digital output can become active immediately or scheduled. Immediate output becomes active
as soon as the software schedule command is received.
Scheduled output becomes active at a specific target time or position, given by the software schedule
command.
When a digital output is configured as software scheduled output, the delay parameter is ignored. Use
“Scheduled Output” command to control the digital output.
Software scheduled command can schedule a digital pulse to output at a specified future time or
encoder value, or changes it state immediately. Commands that schedule event in the past will be
ignored. An encoder value is in future if the value will be reached by moving in the direction at which
travel calibration is performed.