1. Continuous alternating output ALT
1. Continuous alternating output ALT
1.1. Instruction Description
When the specified operand changes from OFF to ON, the instruction causes the specified operand to alternate continuously between 1 (ON) and 0 (OFF).
1.2. The valid operands of the instruction
| input/output | data type | operands | description |
|---|---|---|---|
| OUT | ON/OFF | Y/M/S, word to Bit(D/V/Z), local variable(LB) | output |
1.3. Example
Instruction table:
NETWORK 000
LD X000
ALT Y000 //Y000 alternates between 0 and 1, with a period equal to the current scanning period
图1 ALT