Mitsubishi Electric M800VW Series Programming Manual page 174

M800V/M80V Series PLC Programming Manual (1/2)
7 Basic Instructions
7.5 Master Control Instructions
MC
 If the ON/OFF command of the MC instruction is ON when master control is commenced, the operation result between the
MC instruction and MCR instruction will be exactly as the instruction (ladder) shows.
If the MC ON/OFF instruction is OFF, the operation result between MC and MCR instructions will be as follows:
Device
100 ms, 10 ms timer
100 ms cumulative timer counter
Devices in OUT instruction
Devices in the following instruc-
tions:SET/RST, SFT function
 Nesting can be used up to 8 times (N0 to 7).
When the nesting is used, the nesting number that follows "N" is used in ascending order to execute the MC instruction,
while the number is used in descending order to execute the MCR instruction.
 Regardless of the MC instruction's ON/OFF state, scan between MC instruction and MCR instruction can be executed.
 MC instruction can be used as many times as you wish within one scan by changing devices in the destination D.
 When MC instruction is ON, coil of the device specified in the destination turns ON.
 When there is an instruction which does not require any contact instructions (such as FOR, NEXT, or JMP instruction) in
the ladder using the master control, the instruction is executed regardless of the execution command of the MC instruction.
MCR
 This is the instruction for recovery from the master control, and indicates the end of the master control range of operation.
 Specified nesting number that following "N" and after are cleared.
 Arithmetic errors
 There are no arithmetic errors associated with the MC or MCR instructions.
Device status
Count value goes to 0
Current count value is kept as it is.
All turned OFF
Maintain current status
N3 to N7 master control
MCR N3
is cleared
153 IB-1501667-B