PI E-727 User Manual

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 109 / 240
Phone +49 721 4846-0, Fax +49 721 4846-1019, Email info@pi.ws, www.pi.ws
Command String to Send Action Performed
WTR 0 3 1 Set the wave table rate to 3, tripling the duration of
one wave generator output cycle, with linear
interpolation (each wave table point will now
"occupy" 3 servo cycles, but with linear interpolation
applied to smooth the output).
Duration of one output cycle will now be:
0.000050 s * 3 * 2000 = 0.3 s
Note that the WTR command must always specify all
wave generators in the system (<WaveGenID> must
be 0).
Trigger Output Synchronized with Wave Generator
Using the digital output lines OUT1 to OUT3 of the E-727, it is possible to trigger external devices.
See "Digital I/O Socket" (p. 227) for the availability of the lines (pinout) and "Configuring Trigger
Output" (p. 69) for further information.
Example 1: Generate single trigger pulses synchronized with the wave generator in Generator Level
Trigger mode:
Command String to Send
Action Performed
WAV 2 X SIN_P 2000 20 10 2000 0 1000 Define a sine waveform for Wave Table 2, the
segment length and hence the number of points in
the wave table is 2000
TWC Clears all output trigger settings related to the wave
generator by switching the signal state for all points
to "low" (the power-on default state is also "low"). It
is recommended to use TWC before new trigger
actions are defined.
TWS 1 500 1 1 1500 1 1 1900 1 1 2000 1 Set trigger actions for the digital output line OUT1
(identifier is 1): at the waveform points 500, 1500,
1900 and 2000 it is set high; at all other points the
state of the line is low (due to the TWC usage).
CTO 1 3 4
The digital output line OUT1 is set to "Generator Level
Trigger" mode.
WSL 1 2 Connect Wave Generator 1 (Axis 1) to Wave Table 2
WGO 1 1 Start output of Wave Generator 1 immediately
(synchronized by servo cycle). Now the trigger output
action will take place as specified.
WGO 1 0 Stop output of Wave Generator 1 and hence also the
trigger output.

PI E-727 Specifications

General

Brand	PI
Model	E-727
Category	Controller
Language	English