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11. PLC Help Function
11.3 PLC Switches
- 389 -
(2) Three-point switch
(Example) When three opposite switches 17, 18, and 19 are provided;
M200
M100
M101 M102
SET M3
SM96
RST M3
SET M4
SM97
RST M4
SET M5
When SM96 turns on,
R39 bit0 turns OFF.
RST M4
RST
M3
RST M5
M3
M4
SM98
RST M5
M5
When SM97 turns on,
R39 bit1 turns OFF.
When SM98 turns on,
R39 bit2 turns OFF.
Always ON
MOV R39 K4M100
M100
M101
M102
M100
M101 M102
M100
M101 M102
M200
M100
M101 M102
M100
M101 M102
M100
M101 M102
M200
M100
M101 M102
M100
M101 M102
M100
M101 M102
Always ON
MOV K4M200 R139