7 rising pulse instruction (on – pls) – Yaskawa Ladder Works Programming Manual User Manual
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1.7 RISING PULSE Instructions (ON – PLS)
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1.7 RISING PULSE Instruction (ON – PLS)
[Outline]
The ON-PLS sets the value of the bit input to ON during one scan when the immediately-preceding
value of the bit output changes from OFF to ON. The designated register is used to store the previous
value of the bit output.
[Format]
Symbol : ON-PLS
Full Name : Rise Pulse
Category : RELAY
Icon :
[Parameter]
Parameter Name
Setting
Register No.
· Any bit type register (except for # and C register)
· Any bit type register with subscript (except for # and C registers)
[Program Example]
When IB00001 turns ON from OFF, MB000101 turns ON and stays ON during 1 scan. MB000100 is
used to store the previous value of IB00001.
IB00001
1 scan
1 scan
MB000100
MB000101
ON
OFF
ON
OFF
ON
OFF
Register status of Rising pulse instruction is shown in Table 1.1.
Table 1.1 Register Status with Rising Pulse Instruction
Input Result
IB00001 MB000100
(Previous value of
IB00001)
MB000100
(IB00001 stored)
MB000101
OFF OFF OFF OFF
OFF ON OFF OFF
ON
OFF
ON
ON
ON ON ON OFF
Notes: Case of Program Example, the instruction is used not for rise detection of MB000100 but
is used for rise detection of IB00001. MB000100 is used only for storing the previous
value of IB00001.