3 Basic Instructions
DVP-PLC Application Manual
3-3
3.2 Explanations on Basic Instructions
Mnemonic Function
Program
steps
LD
Loading in A contact
1
Controllers
ES
EX
SS
SA
SX
SC
EH
SV
X0 ~ X377
Y0 ~ Y377 M0 ~ M4095 S0 ~ S1023
T0 ~ T255
C0 ~ C255
D0 ~ D9999
Operand
9
9
9
9
9
9
-
Explanations:
The LD instruction is used on the A contact that has its start from the left BUS or the A contact that is the start of a
contact circuit. The functions are to save the present contents and store the acquired contact status into the
accumulative register.
Program Example:
Ladder diagram:
Instruction code:
Operation:
LD
X0
Loading in contact A of X0
AND
X1
Connecting to contact A of X1 in series
X0
X1
Y1
OUT
Y1
Driving Y1 coil
Mnemonic Function
Program
steps
LDI
Loading in B contact
1
Controllers
ES
EX
SS
SA
SX
SC
EH
SV
X0 ~ X377
Y0 ~ Y377 M0 ~ M4095 S0 ~ S1023
T0 ~ T255
C0 ~ C255
D0 ~ D9999
Operand
9
9
9
9
9
9
-
Explanations:
The LDI instruction is used on the B contact that has its start from the left BUS or the B contact that is the start of a
contact circuit. The functions are to save the present contents and store the acquired contact status into the
accumulative register.
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
Mnemonic Function Program
steps
AND
Series connection- A contact
1
Controllers
ES
EX
SS
SA
SX
SC
EH
SV
X0 ~ X377
Y0 ~ Y377 M0 ~ M4095 S0 ~ S1023
T0 ~ T255
C0 ~ C255
D0 ~ D9999
Operand
9
9
9
9
9
9
-
Explanations:
The AND instruction is used in the series connection of A contact. The functions are to read out the status of present d
Содержание DVP-PLC
Страница 1: ...PLC PLC...
Страница 28: ...1 Basic Principles of PLC Ladder Diagram DVP PLC Application Manual 1 24 MEMO...
Страница 192: ...4 Step Ladder Instructions DVP PLC Application Manual 4 22 MEMO...
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