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MELSEC-Q
3 SPECIFICATIONS
3.5.23 Control mode (buffer memory address 50, 82: Un\G50, Un\G82)
(1) This setting selects a mode for the normal control mode, manual control mode
and program control mode.
• Normal control mode : sets 0.
The manipulated value calculated in PID
operations is used for the control output. The set
value (SV) is changed manually.
• Manual control mode 1 : sets 1.*1
The manipulated value written in MAN output
setting (buffer memory address: 51, 83) is used
for the control output. *1
• Program control mode : sets 2.
The control is performed changing the set values
automatically, following the set program pattern.
The manipulated value calculated in PID
operations is used for the control output.
• Manual control mode 2 : sets 3. *1
The manipulated value written in MAN output
setting (buffer memory address: 51, 83) is used
for the control output. *1
*1: The manual control modes 1 and 2 have different setting ranges and
settings for the MAN output setting. (Refer to Section 3.2.24)
(2) The mode switching completion can be confirmed with the control mode monitor
(buffer memory address: 30).
(3) When switching normal control/program control to manual control, the
manipulated value calculated in PID operations is transferred to the MAN output
setting (buffer memory address: 51, 83) to prevent a sudden change of the
manipulated value. (Bumpless switching)
After completing the manual control switching, the value of the control mode
(buffer memory address: 30) is updated.
The manipulated value of manual control mode 1 and 2 should be set after
confirming the control mode value.
(4) Select "Normal control mode" at auto tuning execution.
If other mode is selected, auto tuning is not executed.
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