Delta AH500 - Lists of Applied Instructions; Applied Instructions

Chapter 3 Instruction Tables
3-9
Instruction
code
Symbol Function
Execution
condition
Operand
PLF Falling-edge output
DY, X, Y, M, S, T, C, HC,
D, L, SM, and PR
 Other instructions
Instruction
code
Symbol Function Operand
INV Inverting the logical operation result –
NOP
–
No operation
–
PSTOP
Stopping executing the PLC
program
–
NP The circuit is rising edge-triggered. –
PN The circuit is falling edge-triggered. –
FB_NP The circuit is rising edge-triggered. S
FB_PN The circuit is falling edge-triggered. S
3.4 Lists of Applied Instructions
3.4.1 Applied Instructions
 Comparison instructions
API
Instruction code
Pulse
Instruction
Symbol Function
16-bit
32-bit
0000 LD= DLD= –
Comparing the values
ON: S
1
＝S
2
OFF:
S
1
≠
S
2
0001 LD<> DLD<> –
Comparing the values
ON: S
1
≠S
2
OFF: S
1
＝S
2
0002 LD> DLD> –
Comparing the values
ON: S
1
＞S
2
OFF: S
1
≦S
2
0003 LD>= DLD>= –
Comparing the values
ON: S
1
≧S
2
OFF: S
1
＜S
2
0004 LD< DLD< –
Comparing the values
ON: S
1
＜S
2
OFF: S
1
≧S
2
0005 LD<= DLD<= –
Comparing the values
ON: S
1
≦S
2
OFF: S
1
＞S
2