62
4
4 Instructions4.1.3 Output Instructions
Instruction Operand
PLS
PLF
X0–X377 Y0–Y377
M0–M7679
M8000–M8511
S0–S4095 SM0–SM1023 T0–T511 C0–C255
√ √ √
When the PLS instruction is driven by the rising edge, the element designated by this instruction is set to
ON and remains so within only one scan cycle.
When the PLF instruction is driven by the falling edge, the element designated by this instruction is set to
ON and remains so within only one scan cycle.
Example:
〔PLS Y1〕
PLS Y1
M2
〔PLF M1〕
PLF M1
X4
Sequence diagram
One scan cycle
One scan cycle
M2
Y1
X4
M1
ALT: Alternate output
◆
Overview
When driving conditions are met, the ALT instruction executes ON-OFF switching for the bit element D.
ALT D
Alternate output Applicable model:
H3U
D
Execution
operand
Bit element
16-bit instruction
(3 steps)
ALT: Continuous
execution
ALTP: Pulse
execution
◆
Operands
Operand
Bit Element Word Element
System·User System·User Bit Designation Indexed Address Constant
Real
Number
D X Y M T C S SM D R T C SD KnX KnY KnM KnS KnSM
V,Z
Modication K H E
Note: The elements in gray background are supported.
◆
Function
The status of the D element is switched when the ow is active. The D element is a bit variable element.
The ALTP instruction of the pulse execution type is usually used.