Mitsubishi Electric MELSEC-Q QD75M User Manual page 582

12 CONTROL SUB FUNCTIONS
Example
External command
valid signal
(3) Add the following PLC program to the control program, and write it to the
PLC CPU.
Write 1000000 to D108 and D109.
Input the external command signal.
DTOP H0 K1514 D108 K1
K62 K1
TOP H0 K1
TOP H0 K1505 K1 K1
12 - 43
MELSEC-Q
[Speed change processing]
<Write the new speed. >
<Set the external command function
selection to external speed change
request. >
<Set the external command signal input
to valid.>
(QD75 starts speed change processing.)