Delta Electronics Extension Digital I/O Module DOP-EXIO14RAE - Manual (Page 70)

Appendix C Use of Basic Instructions|DOP-EXIO Series
Revision March, 2008, Doc. Name: 2007PDD23000014 C-5
Explanation:
To retrieve the previous preserved logical operation result and store it into the accumulative register
(the pointer of operational result will minus 1).
Program Example:
Ladder diagram:
Instruction code: Operation:
LD X0 Loading in contact A of X0
MPS Saving into stack
AND X1 Connecting to contact A of X1 in series
OUT Y1 Driving Y1 coil
MRD Reading from stack
AND X2 Connecting to contact A of X2 in series
OUT M0 Driving M0 coil
MPP Reading from stack and pop pointer
OUT Y2 Driving Y2 coil
X0
Y1
X1
M0
X2
Y2
END
MPP
MRD
MPS
END Program ends
Mnemonic Functions
OUT Output Coil
X0~X17 Y0~Y17 M0~M1279 S0~S127 T0~T127 C0~C254 D0~D599
Operand
- 9 9 9 - - -
Explanations:
1. To output the logical operation result before OUT instruction into a designated device.
2. Actions of coil contact:
OUT instruction
Contact Operational result
Coil
A contact (normally open) B contact (normally closed)
FALSE Off Off On
TRUE On On Off
Program Example:
Ladder diagram:
Instruction code: Operation:
LDI X0 Loading in contact B of X0
AND X1 Connecting to contact A of X1 in series
X0 X1
Y1
OUT Y1 Driving Y1 coil