Opr Control; Outline Of Opr Control; Two Types Of Opr Control - Mitsubishi Electric MELSECQ Series User Manual

8 OPR CONTROL

CHAPTER 8 OPR CONTROL

8.1 Outline of OPR control

8.1.1 Two types of OPR control

8 - 1
Downloaded from ManualsNet.com
This chapter details the OPR control of the QD70.
"OPR control" is exercised to set up a position (= OP) as a reference for carrying out
positioning control.
It is used to return a machine system at any position other than the OP to the OP when
the QD70 issues a "OPR request"
positioning control stop.
In the QD70, the following two types of control are defined as "OPR control" in the
sequence of OPR operation.
Either of these two types of OPR control can be executed by setting the "OPR data",
setting "9000" or "9001" in " Cd. 3 Start method", and turning ON the positioning start
signal.
(1) Establish a positioning control OP
"Machine OPR control" (Start method: 9000)
(2) Carry out position control toward the OP
"Fast OPR control" (Start method: 9001).
The "machine OPR control" in (1) above must always be carried out before
executing the "fast OPR control" in (2).
When OPR control is not needed
In the system that does not require OPR control, setting "1" in " Cd. 2 OPR request
flag OFF request" forcibly turns OFF the "OPR request flag" ( Md. 7 Status: b0).
When OPR control is not to be exercised, operation starts using the position at
power-on ( Md. 1 Current feed value) as "0".
Also, the "OPR data ( OPR. 1 to OPR. 9 )" must all be set to the initial values or the
values that will not result in an error.
REMARK
OPR request
The "OPR request flag" (Md. 7 Status signal: b0) must be turned ON in the QD70,
and a machine OPR control must be executed in the following cases.
• When the power is turned ON
• When machine OPR control is started
The "OPR request flag" turns OFF and the "OPR complete flag" (Md. 7 Status
signal: b1) turns ON if the machine OPR control is executed and is completed
normally.
search engine
with the power turned ON or others, or after a
MELSEC-Q
8
8 - 1