PI E-871.1A1N, User Manual, Page: 37 / 226

Commands
# Page
#4 Request Status Register 117
O Page
ONT? Get On-Target State 152
S Page
SRG? Query Status Register Value 160
Parameters
0x36 Settling Window
(Encoder Counts) Settling window around the target position.
Presets the window limits (half of the window
width). If the current position exits the settling
window, the target position is no longer
considered as reached.
Can be changed only if the servo mode is
switched off.
0 to 231 [encoder counts]
0x3F Settling Time (s) Delay time for setting the on-target state.
0.000 to 1.000 [s]
4.9.9 Reference Point Switch Detection
The E-871.1A1N receives signals from the reference point switch at its axis
connector (p. 222) . The TRS? command can be used to determine whether an axis has a
reference point switch with direction sensing.
The signal from the reference point switch of the positioner can be used for reference
moves. The controller knows the absolute axis position after a reference move to the
reference point switch (
reference point definition (p. 40) ).
The following parameters can be used to configure how the E-871.1A1N detects the
reference point switch:
■ Invert Reference? (0x31)
■
Has Reference? (0x14)
■
Reference Signal Type (0x70)
Commands
T Page
TRS? Indicate Reference Switch 165
Parameters
0x31 Invert Reference? Should the reference signal be inverted?
Inverts the signal of the reference point switch or
a digital input that is used instead of the
reference point switch.
0 Reference signal not inverted
1 Reference signal inverted
4 PRODUCT DESCRIPTION PZ285EN
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