Delta C2000 Series User Manual page 533

Chapter 16 PLC Functions Applications
Command
MRD Read stack (pointer does not change)
Operand
Reads stack content and saves to cumulative register. (Stack pointer does not
change)
Command
Read stack
MPP
Operand
Retrieves result of previously-save logical operation from the stack, and saves to
cumulative register. (Subtract one from stack pointer)
Ladder diagram:
Command
OUT Drive coil
X0~X17
Operand
Outputs result of logical operation before OUT command to the designated element.
Coil contact action:
Result:
FALSE
Ladder diagram:
X0
Command
SET Action continues (ON)
X0~X17
Operand
When the SET command is driven, the designated element will be set as On, and will
be maintained in an On state, regardless of whether the SET command is still driven.
The RST command can be used to set the element as Off.
Ladder diagram:
X0
C2000 Series
MPS
X0 X1
X2
MRD
MPP
Y0~Y17
Coil
Off
TRUE On
X1
Y0~Y17
Y0
SET
Function
N/A
Function
N/A
Command code:
LD
MPS
Y1
AND
OUT
M0
MRD
Y2
AND
OUT
END
MPP
OUT
END
Function
M0~M799 T0~159
Out command
Access Point:
Contact a (NO) Contact b (NC)
Not conducting Conducting
Conducting Not conducting
Command code:
LD
Y1
AND
OUT
Function
M0~M799 T0~159
Command code:
LD
Y1
AN
SET
16-42
Description:
X0 Load Contact a of X0
Save to stack
Create series connection
X1
to contact a of X1
Y1 Drive Y1 coil
Read stack (pointer does
not change)
Create series connection
X2
to contact a of X2
M0 Drive M0 coil
Read stack
Y2 Drive Y2 coil
Program conclusion
C0~C79 D0~D399
Description:
X0 Load Contact b of X0
Establish parallel
X1 connection to contact a
of X1
Y1 Drive Y1 coil
C0~C79 D0~D399
Description:
X0 Load Contact a of X0
Establish parallel
Y0 connection to contact b
of Y0
Y1 Action continues (ON)