Mitsubishi Electric MELSEC-Q Series User Manual page 78

3 SPECIFICATIONS
3 - 43
(b) Cascade control shift from ON to OFF
The SV tracking function operates as shown below.
The value in CH2 Set value monitor (buffer memory address: 26) at the
cascade control shift to OFF is set as the set value (SV) of the slave
channel. Then, the value in Cascade monitor (buffer memory address: 179)
is changed.
To change the set value (SV) after the control shift, check that the cascade
control has stopped before changing a setting. The cascade control stop
status can be checked in Cascade monitor (buffer memory address: 179).
(The value 0 indicates the stop status.)
(4) Restrictions
The following is the restrictions on the SV tracking function. If the following
applies, the function is not executed.
(a) Shift from the program control mode
• If the control mode is switched while program control is being reset
• If the control mode is switched after the program control is completed
Mode after control mode
shift
Normal control mode
Manual control mode 1
Manual control mode 2
(b) Cascade control shift from ON to OFF
• If cascade control is being executed in the program control mode
Control mode in cascade control
CH1
Normal control mode
Manual control mode 1
Program control mode
Program control
RESET RUN
Depends on the setting of SV
Ignored tracking setting (buffer
memory address: 203, 219).
CH2
Normal control mode
Normal control mode
Program control mode
MELSEC-Q
End output Completed
Ignored
SV tracking operation
Depends on the setting of SV
tracking setting (buffer memory
address: 203, 219)
Ignored
3 - 43