Delta Electronics AC Motor Drive VFD-E User Manual
Page 318
Appendix D How to Use PLC Function|
Revision June 2008, 04EE, SW--PW V1.11/CTL V2.11
D-35
Explanations:
To save contents of the accumulative register into the operation result. (the result operation pointer
pluses 1)
Mnemonic Function
MRD
Reads the current result of the internal PLC operations
Operand None
Explanations:
Reading content of the operation result to the accumulative register. (the pointer of operation result
doesn’t move)
Mnemonic Function
MPP
Reads the current result of the internal PLC operations
Operand None
Explanations:
Reading content of the operation result to the accumulative register. (the stack pointer will decrease
1)
Program Example:
Ladder diagram:
Command code: Operation:
LD
X0
Load contact A of X0
MPS
Save in stack
AND
X1
Connect to contact A of X1 in
series
OUT
Y1
Drive Y1 coil
MRD
Read from the stack (without
moving pointer)
AND
X2
Connect to contact A of X2 in
series
OUT
M0
Drive M0 coil
MPP
Read from the stack
OUT
Y2
Drive Y2 coil
X0
Y1
X1
M0
X2
Y2
END
MPP
MRD
MPS
END
End
program
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