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5-47
MC,MCR
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5.5 Master Control Instructions
5.5.1 Setting and resetting the master control (MC,MCR)
5.5 Master Control Instructions
5.5.1 Setting and resetting the master control (MC,MCR)
MC,MCR
Function
The master control instruction is used to enable the creation of highly efficient ladder switching
sequence programs, through the opening and closing of a common bus for ladders.
A ladder using the master control is as follows:
Remark
Inputting of contacts on the vertical bus is not necessary when programming in the
write mode of a peripheral device.
These will be automatically displayed when the "conversion" operation is
conducted after the creation of the ladder and then "read" mode is set.
n : Nesting (N0 to N14) (Nesting)
: Device number to be turned ON (bits)
Setting
Data
Internal Devices
R, ZR
J\
U\G
Zn Constants
Other
Bit Word Bit Word N DY
n–– ––––
–– ––
Basic
Process
High
performance
Redundant
Universal
Command
MCR
MC
n
n
n
Master control ladder
D
MC
D
MCR
D
D
X0
X1
Ladder as displayed in GPP ladder mode
M0
n1
X3
M7
Y47
MC
M5
Y4F
X6
X4
n1
MCR
X0F
Y10
M0
n1
X0
X1
M0
n1
X3
M7
Y47
MC
M5
Y4F
X6
X4
n1
MCR
XF
Y40
M0
n1
Ladder as it actually operates
Executed
only when
X0 is ON.