Delta Electronics Programmable Logic Controller DVP-PLC - Manual (Page 160)

3 Basic Instructions
DVP-PLC Application Manual 3-6
Mnemonic Function Program steps
ORB Parallel connection- loop blocks 1
Controllers
ES EX SS SA SX SC EH SV
Operand N/A
Explanations:
To perform the “OR” operation of the preserved logic results and content in the accumulative register.
Program Example:
Ladder diagram: Instruction code: Operation:
LD X0 Loading in contact A of X0
ANI X1 Connecting to contact B of X1 in series
LDI X2 Loading in contact B of X2
AND X3 Connecting to contact A of X3 in series
ORB Connecting circuit block in parallel
X0
X2
Y1
X1
X3
ORB
Block A
Block B
OUT Y1 Driving Y1 coil
Mnemonic Function Program steps
MPS
Store the current result of the
internal PLC operations
1
Controllers
ES EX SS SA SX SC EH SV
Operand N/A
Explanations:
To save the content in the accumulative register into the operational result (the pointer of operational result will plus
1).
Mnemonic Function Program steps
MRD
Reads the current result of the
internal PLC operations
1
Controllers
ES EX SS SA SX SC EH SV
Operand
N/A
Explanations:
To read the operational result and store it into the accumulative register (the pointer of operational result stays intact) .
Mnemonic Function Program steps
MPP
Pops (recalls and removes) the
currently stored result
1
Controllers
ES EX SS SA SX SC EH SV
Operand N/A
Explanations:
To retrieve the previous preserved logical operation result and store it into the accumulative register (the pointer of
operational result will minus 1) .