DVP-ES2-EX2-SS2-SA2-SX2-Operation Manual

3. Instruction Set
execution time could be longer due to a more complicated program, e.g. program contains multiple
interruptions or high speed input/output.
3.2 Explanations to Basic Instructions
Mnemonic Operands Function Program steps
LD X, Y, M, S, T, C Load NO contact 1~3
Controllers
ES2/EX2 SS2 SA2
SE
SX2
Explanations:
The LD instruction is used to load NO contact which connects to left side bus line or starts a new
block of program connecting in series or parallel connection.
Program example:
Ladder diagram:
X0 X1
Y1
Instruction:
Operation:
LD X0 Load NO contact X0
AND X1 Connect NO contact X1 in series
OUT Y1 Drive coil Y1
Mnemonic Operands Function Program steps
LDI X, Y, M, S, T, C Load NC contact 1~3
Controllers
ES2/EX2 SS2 SA2
SE
SX2
Explanations:
The LDI instruction is used to load NC contact which connects to left side bus line or starts a new
block of program connecting in series or parallel connection.
Program example:
Ladder diagram:
X0 X1
Y1
Instruction:
Operation:
LDI X0 Load NC contact X0
AND X1 Connect NO contact X1 in series
OUT Y1 Drive coil Y1
Mnemonic Operands Function Program steps
AND
X, Y, M, S, T, C
Connect NO
contact in series
1~3
Controllers
ES2/EX2 SS2 SA2
SE
SX2
Explanations:
The AND instruction is used to connect NO contact in series.
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