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6F3B0253
Basic Hardware and Function 119
7. Instructions
Transitional contact (Rising edge)
Expression
Input Output
Function
When the input at last scan is OFF and the input at this scan is ON, the output is turned ON.
This instruction is used to detect the input changing from OFF to ON.
Execution condition
Input Operation Output
OFF Regardless of the input state at last scan OFF
ON When the input state at last scan is OFF ON
When the input state at last scan is ON OFF
Operand
No operand is required.
Example
Coil Y022 comes ON for only 1 scan when the device X000 comes ON.
X000
Y022
1 scan time 1 scan time
Note
• In case of T1, the maximum usable number in a program is 512. ( and total)
• In case of T1S, the maximum usable number in a program is 2048.
(
PN(P)(N)
total)