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7.6.1
Machine OPR
The machine OPR establishes the machine OP using the OPR start instruction (IPOPR1(P)). ( Page 146, Section
7.12.1 (4)) Once the machine OPR is complete, the mechanically established position becomes the "OP" which
defines the starting point of positioning control. (No address information stored in the LCPU or servo amplifier is used.)
How the OP is established by machine OPR varies depending on the "OPR method". Select one of the six methods
that best suits your system.
(1) OPR method and I/O signal
Different I/O signals are used under each OPR method. A correspondence table of OPR methods and I/O signals
is shown below.
I/O signal
Zero signal
Near-point dog signal
Deviation counter clear signal
*1
External command signal
CW/PULSE/A phase output
CCW/SIGN/B phase output
*1
Drive unit ready signal
*1*2
Upper limit signal
*1*2
Lower limit signal
*1
When this signal is not required, it can be used for other functions such as the general-purpose input and general-
purpose output.
*2
These signals are required when the OPR retry function or hardware stroke limit function is used.
(2) Sub function
The OPR retry function can be used when the upper and lower limit signals are input.
( Page 110, Section 7.10.1)
Near-point
Stopper 1
Stopper 2
dog method
*1
CHAPTER 7 POSITIONING FUNCTION
: Wiring required, : Wire as necessary, : Wiring not required
OPR method
Stopper 3
Count 1
*1
Count 2
No method
*1
*1
*1
*1
*1
7
*1
*1
71
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