PI MS249E - Page 85

7 Operation
C-863.12 Mercury Controller MS249E Version: 1.2.1 79
1. Configure the digital output line (<TrigOutID>) that is to be used as the trigger output:
− Send CTO <TrigOutID> 2 A, where A indicates the axis to be moved.
− Send CTO <TrigOutID> 3 0, where 0 specifies the Position Distance trigger
mode.
− Send CTO <TrigOutID> 1 S, where S indicates the distance.
− Send CTO <TrigOutID> 8 Start, where Start indicates the start value.
− Send CTO <TrigOutID> 9 Stop, where Stop indicates the stop value.
2. If you want to activate the conditions for trigger output, send TRO <TrigOutID> 1.
Example
A pulse on digital output line 1 is output every time the axis 1 of the positioner has covered a
distance of 0.1 µm, as long as axis 1 is moving in positive direction of motion within the range of
0.2 µm to 0.55 µm (start value < stop value).
➢ Send:
CTO 1 2 1
CTO 1 3 0
CTO 1 1 0.0001
CTO 1 8 0.0002
CTO 1 9 0.00055
TRO 1 1
"Position Distance" trigger mode with start and stop values for negative motion
direction of the axis
The above example is presented with interchanged start and stop values in the following.
Triggering occurs in negative motion direction of the axis (stop value < start value) in the range
between 0.55 µm and 0.2 µm.
Example:
➢ Send:
CTO 1 2 1
CTO 1 3 0
CTO 1 1 0.0001
CTO 1 8 0.00055
CTO 1 9 0.0002
TRO 1 1