5 SEQUENCE INSTRUCTIONS
5.5 Master Control Instructions
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5
5.5 Master Control Instructions
Setting/resetting a master control
MC, MCR
When this instruction is used in safety programs executed by the Safety CPU, unless otherwise specified,
replace some words as follows:
•"Timer" "Safety timer"
• "Retentive timer" "Safety retentive timer"
•"Counter" "Safety counter"
• Add "SA\" to the devices "X" and "M" in Figures. (Example: "X0" "SA\X0", "M0" "SA\M0")
• "Scan time" "Safety cycle time"
• MC: This instruction starts a master control.
• MCR: This instruction ends a master control.
■Execution condition
■Description, range, data type
*1 Only labels assigned to the device (N) or to which constants are assigned can be used.
• In safety programs executed by the Safety CPU, only safety devices and safety labels of data types described in the table
can be used.
Ladder ST
(1) Master control ladder
ENO:=MC(EN,N,d);
ENO:=MCR(EN,N);
FBD/LD
MC MCR
Instruction Execution condition
MC
MCR
Every scan
Operand Description Range Data type Data type (label)
(N) Nesting N0 to N14 Device name ANY16_S
*1
(d) Number of the device to be turned on Bit ANY_BOOL
EN Execution condition Bit BOOL
ENO Execution result Bit BOOL
RnCPU
RnENCPU
RnSFCPU RnSFCPURnPCPURnPCPU
(Standard) (Safety)
(Redundant)
(Process)
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