Appendix D How to Use PLC Function
VFD-E Series
Revision August 2006, 01EE, SW--PW V1.03/CTL V2.03 D-31
Explanations:
To save contents of the accumulative register into the operation result. (the result operation pointer
pulses 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
INV Inverting Operation
Operand None
Explanations:
Inverting the operation result and use the new data as an operation result.
Program Example:
Ladder diagram: Command code: Operation:
LD
X0 Load A contact of X0
INV
Inverting the operation result
X0
Y1
OUT Y1
Drive Y1 coil
Mnemonic Function
OUT Output coil
X0~X17 Y0~Y17 M0~M159 T0~15 C0~C7 D0~D29 X0~X17
Operand
--
999
-- -- --
Explanations:
Output the logic calculation result before the OUT command to specific device.
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