KEYENCE Visual KV Series - Manual (Page 135)

2.4 Instruction Details
1
2
3-111 Chapter 2 Instructions
Cautions for using STG instruction
Interlock
When an STG instruction moves to another stage, the previous and next stages turn
ON simultaneously only for one scan. Provide an interlock circuit for the output
which may be dangerous when turned ON in such occasions (e.g., motor's normal/
reverse rotation).
Double coil
A double coil can be used for an STG instruction.
Note: When STG 1000 and 1002 turn ON simultaneously, priority is given to output
relay 0500 of STG 1002, which is entered last.
Retaining output
Use the SET instruction to retain output.
When no JMP is used
When no JMP instruction is used, the STG instruction does not turn OFF even if
0001 turns ON. Be sure to use JMP after STG.
STG operand
When the STG operand relay remains ON, 0500 does not turn OFF even if 0001
turns ON.
Use a differentiation type instruction for the condition of the first STG instruction.
Double coil
0001
0501
0500 1001
JMP
1000
STG
1002
JMP
1001
STG
0002
0501
0500
1100
0501
0500 1001
JMP
1000
STG
1002
JMP
1001
STG
1101
0001
ON
1100
0002
ON
1101
0500 1003
JMP
1002
STG
1102 0003
ON
1102
0000 1001
1002
JMP
1000
STG
JMP
1001
STG
0001
0500
SET
0501
SET
0001 1000
STG
0500 0501
0001
0000
1000
STG
1001
JMP
0500
1000
SET
0001
1100 0000
1000
STG
1100
DIFU
1001
JMP
0500
1000
SET
Interlock
STG
KVNKA Chap 02_4bP.p65 08.3.11, 0:00 PM 111