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Chapter 8 OPR Control
8.4 Selection of the OPR setting condition
8.4.1 Outline of the OPR setting condition
If executing the home position return (OPR) when selecting "0: Need to pass servo
motor Z-phase after power on" with "Function selection C-4 (PC17)", it is necessary
that the servomotor has been rotated more than one revolution and passed the Z
phase (Motor reference position signal) and that the zero point pass signal ([Md.108]
Servo status (low-order buffer memory address): b0) has turned ON.
When selecting "1: Not need to pass servo motor Z-phase after power on" with
"Function selection C-4 (PC17)", it is possible to turn the zero point pass signal
([Md.108] Servo status (low-order buffer memory address): b0) ON without passing the
zero point.
Buffer memory address (low-order)
QD77MS2/QD77MS4 QD77MS16
[Md.108] Servo status: b0
876+100n 2476+100n
n: Axis No.-1
Data setting
To select the "OPR setting condition", set the "servo amplifier" shown in the
following table.
Servo parameters are set for each axis.
The "OPR setting condition" is stored into the following buffer memory addresses.
Setting item
Setting
value
Setting details
Buffer memory address
QD77MS2
QD77MS4
QD77MS16
Function selection C-4
(PC17)
0
0 : Need to pass servo motor Z-phase after
power on
1 : Not need to pass servo motor Z-phase
after power on
30180+200n 28480+100n
n: Axis No.-1
: Refer to Section 5.2.8 "Servo parameters" for information on the storage details.
Precautions during operation
(1) Set "Function selection C-4 (PC17)" (transferred the parameter to the servo
amplifier from the Simple Motion module), and then turn off the power supply
of the servo amplifier once and
switch it on again to make that parameter
setting valid.