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MELSEC-Q
6 SEQUENCE PROGRAM USED FOR POSITIONING CONTROL
6.5 Program details6.5.1 Initialization program[1] OPR request OFF program
This program forcibly turns OFF the "OPR request flag" ( Md.31 Status : b3)
which is ON.
When using a system that does not require OPR, assemble the program to
cancel the "OPR request" made by the QD75 whe n the power is turned ON, etc.

Data requiring setting

Set the following data to use the OPR request flag OFF request.
Buffer memory address
Setting item Setting
value Setting details Axis 1Axis 2Axis 3Axis 4
Cd.19 OPR request flag OFF
request 1 Set to "1: Turn OPR request flag OFF". 1521 1621 1721 1821
Refer to Section 5.7 "List of control data" for details on the setting details.

Time chart for OPR OFF request

OFF
ON
OFF
010
ON
OFF
PLC READY signal [Y0]
QD75 READY signal [X0]
OPR request OFF flag
[ Md. 31 Status: b3]
Cd. 19 OPR request flag OFF request
ON
Fig. 6.1 Time chart for OPR OFF request
[2] External command function valid setting program
This program is used to validate the "exter nal command signal" beforehand when
using the external command functions (externa l start, speed change, speed-
position switching, position-speed switchin g, skip). (Set which function to use
beforehand in " Pr.42 Exter nal command function selection".)
Set the following data to validate the "ex ternal command signal".
Buffer memory address
Setting item Setting
value Setting details Axis 1 Axis 2 Axis 3 Axis 4
Cd.8 External command valid 1 Set to "1: Validate external command". 1505 1605 1705 1805
Refer to Section 5.7 "List of control data" for details on the setting details.