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MELSEC-Q
8 OPR CONTROL
!
CAUTION
In the case of the absolute position system, use the PLC program to check the OPR request
before performing the positioning operation.
Failure to observe this could lead to an accident such as a collision.
REMARK
OPR request
The "OPR request flag" (
Md.31
Status: b3) must be turned ON in the QD75MH, and a
machine OPR must be executed in the following cases.
•
When the power is turned ON (in the case of the absolute position system, however,
the "OPR request flag" is not established.)
•
When the machine OPR has not been executed at the absolute position system
•
When the "absolute position lost" (
Md.108
Status: b4) turns ON in the absolute
position system
•
When the "
Pr.114
Rotation direction selection" is changed
•
When the machine OPR starts
The address information stored in the QD75MH cannot be guaranteed while the "OPR
request flag" is ON.
The "OPR request flag" turns OFF and the "OPR complete flag" (
Md.31
Status: b4)
turns ON if the machine OPR is executed and is completed normally.