MITSUBISHI ELECTRIC Mitsubishi Programmable Logic Controller QD75D - Manual (Page 516)

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MELSEC-Q
12 CONTROL SUB FUNCTIONS
(3) Add the following sequence program to the control program, and write it to
the PLC CPU.
External command
valid signal
(QD75 starts speed change processing.)
[Speed change processing]
<Write the new speed. >
K1 D108 K1514 H0 DTOP
K1 K1 K1505 H0 TOP <Set the external command signal input
to valid.>
K1 K1 K62 H0 TOP
Input the external command signal.
<Set the external command function
selection to external speed change
request. >
Write 1000000 to D108 and D109.
Example