Fast Opr - Mitsubishi Electric MELSEC-L02SCPU User Manual

7.6.2

Fast OPR

The fast OPR is a function to perform positioning to the "OP address" established by machine OPR or other position
(standby address).
Address
OP address This address is used to perform positioning using the OP established by machine OPR as the starting point.
This address is used to perform positioning using a position other than the OP established by machine OPR
as the starting point. In certain situations such as when a near-point dog cannot be installed near the
Standby address
standby address and thus the standby address is not the same as the OP in machine system design, fast
OPR can be implemented to the standby address to return the workpiece to the starting point ( OP).
High-speed positioning control is started with the OPR start instruction (IPOPR1(P)) and implemented without using a
near-point dog or zero signal.( Page 146, Section 7.12.1 (4))
(1) Fast OPR operation
This operation uses the following OPR parameters, except for the OP address and standby address set for the
OPR start instruction (IPOPR1(P).
OPR Acceleration/Deceleration Time
OPR Deceleration Stop Time
OPR start instruction
execution command
Axis 1 start instruction in
execution (SM1848)
Axis 1 BUSY (SM1840)
Axis 1 positioning complete
(SM1841)
Axis 1 OPR request (SM1842)
Axis 1 OPR complete (SM1843)
Axis 1 operation status (SD1844)
Axis 1 movement amount after
near-point watchdog ON
(SD1848, SD1849)
(2) Precautions
• Establish the OP via machine OPR before starting fast OPR. Otherwise, the "Machine OPR not performed"
error (Axis 1 error code: 1201) occurs and operation does not start.
• If the system uses speed control, speed/position switching control and current value change, the Axis 1
current feed value (SD1840, SD1841) is different from the coordinate calculated with reference to the
machine OP and thus fast OPR to the machine OP or standby address cannot be performed.
Setting item
OPR Speed
V
Fast OPR
OPR ACC/DEC time
ON
OFF
ON
OFF
ON
OFF
ON
OFF
OFF
OFF
Standby (0) Fast OPR (9)
CHAPTER 7 POSITIONING FUNCTION
Description
Data type
OPR Parameter
OPR speed
OP or standby
address
OPR DEC/STOP time
ON
Standby (0)
Not changed
7
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