User Manual
E727T0005, valid for E-727
BRO, 2019-06-28
Physik Instrumente (PI) GmbH & Co. KG, Auf der Roemerstrasse 1, 76228 Karlsruhe, Germany Page 80 / 240
Phone +49 721 4846-0, Fax +49 721 4846-1019, Email info@pi.ws, www.pi.ws
Figure 26: "Position Distance" Trigger Mode with threshold settings, with position level filter
Example—"On Target" Trigger Mode
With the "On Target" trigger mode, the on-target status of the selected axis is written to the
selected trigger line. It is the same on-target status flag which can also be read by the ONT?
command. The on-target status is influenced by two parameters: settling window (On Target
Tolerance, ID 0x07000900) and settling time (Settling Time, ID 0x07000901). The on-target status is
true when the current position is inside the settling window and stays there for at least the settling
time. The settling window is centered around the target position.
The following parameters must be set for the digital output line which is to be used for trigger
output (<TrigOutID>):
Axis (<CTOPam> = 2)
TriggerMode (<CTOPam> = 3)
General notation of the CTO command for this mode (in fact, the command arguments can be
divided in two "portions", each starting with the <TrigOutID> declaration):
Command
mnemonic
Axis selection Trigger mode selection
CTO
<TrigOutID> 2
<TrigOutID> 3 2
Instead of using the CTO command, you can also set the values of the corresponding parameters
with SPA or SEP, see “Configuring Trigger Output” (p. 69) for a parameter list.
Example: The On-Target status flag of axis 1 is to be written to the digital output line 1. Send:
CTO 1 2 1 1 3 2
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