THORLABS KBD101 User Manual page 56

Chapter 6
Input Trigger Modes
When configured as an input, the TRIG ports can be used as a general purpose digital
input, or for triggering a relative, absolute or home move. When used for triggering a
move, the port is edge sensitive. In other words, it has to see a transition from the
inactive to the active logic state (Low->High or High->Low) for the trigger input to be
recognized. For the same reason a sustained logic level will not trigger repeated
moves. The trigger input has to return to its inactive state first in order to start the next
trigger. The mode is set in the Trig 1 Mode and Trig 2 Mode parameters as follows:
Disabled - The trigger IO is disabled
IN - GPI - General purpose logic input (read through status bits using the
LLGetStatusBits method).
IN - Relative Move - Input trigger for relative move.
IN - Absolute Move - Input trigger for absolute move.
IN - Homed - Input trigger for home move.
Output Trigger Modes
When the Trigger 1 Mode and Trigger 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:
OUT GPO - General purpose logic output.
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.
OUT - At Max Velocity - Trigger output active (level) when motor at 'max velocity'.
OUT - At Position 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.
OUT - At Position 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.
OUT - At Position 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.
56 HA0364T Rev Ck Jan 2017