Setting And Resetting The Master Control: Mc, Mcr - Mitsubishi Electric MELSEC Q Series Programming Manual

5 SEQUENCE INSTRUCTIONS FOR MOTION CPU

5.3.7 Setting and resetting the master control: MC, MCR

Setting
data
X Y M
(n)
(D)
[Setting data]
[Function]
Bit device
SM F T C D
[Instruction]
Command
MC
n
(D)
MCR
Setting data
n
(D)
(1) Setting the master control (MC)
• If the execution command of the MC instruction is ON when master control is
started, the result of the operation from the MC instruction to the MCR
instruction will be exactly as the instruction (ladder) shows.
• If the execution command of the MC instruction is OFF, the result of the
operation from the MC instruction to the MCR instruction will be as shown
below:
Device
100ms timer,
10ms timer
100ms retentive timer,
Counter
Devices in OUT
instruction
SET/RST, SFT devices
in the following
instructions
• Nesting can be used up to 8 times (N0 to N7).
When using nesting, nests should be inserted from the lower to higher nesting
number (N) with the MC instruction, and from the higher to the lower order with
the MCR instruction.
Usable device
Word device
W T C SD Z
MC
Master control ladder
Nesting (N0 to N7)
Device number to be turned ON
Count value goes to 0, coils and contacts all go OFF.
Coils go OFF, but counter values and contacts all maintain
current status.
All turned OFF
Maintain current status
5 - 23
Constant Pointer Level
K H P N
n (D)
MCR n
Description
Device status
Digit
desig- Index
nation
: Usable