Yaskawa YASNAC PC NC PLC Programming Manual - Manual (Page 53)

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YASNAC PCNC PLC Programming Manual Chapter 6: PLC Instructions
Do not use the same address for both a fixed timer and a variable timer.
If used, correct operation cannot be guaranteed.
6.3.3 Register Instructions
The register instructions are described below.
(1) INR (Increment Register) RR after operation : RR-
(a) Function
The instruction adds “+1” to the content of the register when the ST contact is ON
(RR = 1). If the ST contact is OFF (RR = 0), addition is not executed.
(b) Format
(c) Explanation
• An ST contact must be entered before the INR instruction.
• The INR instruction is executed in intervals of “4 × n” msec while the ST contact is
ON.
• There is no function to detect overflow. If a timer counts to FFH, it returns to 0H.
(d) Example
The following examples show when the register of #1500s is used.
D Paradym31 Variable
Name