Mitsubishi Electric MELSEC iQ-R RD75P4, User Manual

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2 OPR CONTROL
2.2 Machine OPR
2.2
Machine OPR
Operation overview of the machine OPR
Use the OPR retry function when the OP position is not always in the same direction from the workpiece
operation area (when the OP is not set near the upper or lower limit of the machine). The machine OPR may
not be completed unless the OPR retry function is used.
Machine OPR operation
In the machine OPR, a machine OP is established.
This operation does not use the address information in the RD75, CPU module, and servo amplifiers at all.
After the machine OPR is completed, the mechanically specified position is handled as the OP, the start point for the
positioning control.
The method for establishing an OP by the machine OPR depends on the setting of [Pr.43] OPR method.
The following shows the operation after the machine OPR is started.
1.
The machine OPR is started.
2.
The operation starts according to the speed and direction set in the OPR parameters ([Pr.43] to [Pr.57]).
3.
The OP is established using the method set in [Pr.43] OPR method, and the operation stops. (Refer to the following.

Page 42 Near-point dog method to Page 56 Data setting method.)
4.
If "a" is set as [Pr.45] OP address, "a" will be stored as the current position in [Md.20] Current feed value and [Md.21]
Machine feed value which have been monitoring the position.
5.
The machine OPR is completed.
[Pr.45] OP address is a fixed value set by users.
M
OP
Near-point dog
Machine OPR