Mitsubishi Q Mode, Programming Manual

Page: 92 / 126

8 - 16
MELSEC-Q/QnA
8. INCOMPLETE DERIVATIVE PID CONTROL INSTRUCTIONS
AND PROGRAM EXAMPLES
Since the manual mode is not switched
to the automatic mode until PID
operation is performed after the manual
to automatic mode change command
has turned ON, executes the manual to
automatic change command processing
(step 115 to step 151) with a delay in
switching time taken into consideration.
Command to execute
processing at 1 second
intervals
Counts the number of
times.
Subtracts the quotient
from the SV.
Executes the S.PIDCONT instruction in
either the manual mode or automatic mode.
End of manual to automatic mode
change processing
Processing to
return the SV
to the value
used in the
automatic
mode.
Subtracts the
remainder from the SV
only at the first time.
is calculated; the quotient is stored in
D215 and the remainder in D216.
(Present
SV value)
Resets the devices
used for manual to
automatic mode
change processing.
Sets the MV externally.
Processing in
manual mode
Sets the automatic mode.
Manual to automatic mode
change command
Turns ON the output enable of CH.1 of
the Q62DA.
Writes the MV value to CH.1 of the
Q62DA.
PID operation stop
Sets the manual mode.
10
(SV value in
automatic mode)
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