Delta CT2000 Series User Manual page 485

Chapter 16 PLC Function CT2000 Series
Command
MC/MCR
Connect/release a common series contact
Operand N0~N7
MC is the main control initiation command, and any commands between MC and
MCR will be executed normally. When the MC command is Off, any commands
between MC and MCR will act as follows:
Determination of commands
Coil driven by OUT command None receive power
Elements driven by SET, RST
Applications commands
MCR is the main control stop command, and is placed at the end of the main control
program. There may not be any contact commands before the MCR command.
The MC-MCR main control program commands support a nested program structure
with a maximum only 8 levels; use in the order N0-N7, please refer to the following
program:
Ladder diagram:
X0
X1
X2
X3
X10
X11
Command
LDP
Start of forward edge detection action
X0~X17
Operand
The LDP command has the same usage as LD, but its action is different; its function is
to save current content, while also saving the detected state of the rising edge of the
contact to the cumulative register.
Ladder diagram:
Ordinary timer
Counter
commands
MC
N0
Y0
MC
N1
Y1
N1
MCR
N0
MCR
MC
N0
Y10
N0
MCR
Y0~Y17
 
X0 X1
Y1
Function
Description
The timing value will revert to 0, the coil will lose
power, and the contact will not operate
The coil will lose power, and the count value and
contact will stay in their current state
Will remain in their current state
None are actuated
Command
code:
LD X0 Load Contact a of X0
Connection of N0 common series
MC N0
contact
LD X1 Load Contact a of X1
OUT Y0 Drive Y0 coil
:
LD X2 Load Contact a of X2
Connection of N1 common series
MC N1
contact
LD X3 Load Contact a of X3
OUT Y1 Drive Y1 coil
:
MCR N1
Release N1 common series contact
:
MCR N0
Release N0 common series contact
:
LD X10 Load Contact a of X10
Connection of N0 common series
N0
MC
contact
LD X11 Load Contact a of X11
OUT Y10 Drive Y10 coil
:
MCR N0
Release N0 common series contact
Function
M0~M799 T0~159
 
Command
code:
Start of X0 forward edge detection
LDP X0
action
Create
AND
X1
contact a of X1
16-44
Description:
C0~C79 D0~D399

－
Description:
series connection to