When A Sequence Program Is Used For The Initial Setting - Mitsubishi Electric MELSEC-Q Series User Manual

7 ONLINE MODULE CHANGE

7.3.2 When a sequence program is used for the initial setting

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(1) Stopping operation
(a) Turn off the following output signals to stop module operation.
Device No.
Yn1
Yn8
Yn9
YnB
POINT
Control may not stop even when Setting/operation mode command (Yn1) is turned
off.
To stop control without fail, set 0 (Stop) in PID continuation flag (buffer memory
address: 169) and turn off Setting/operation mode command (Yn1).
The stop status can be checked with Setting/operation mode status (Xn1) (off:
Stop).
(b) If data in the buffer memory areas to be saved are not backed up in
advance, select [Online] - [Monitor] - "Buffer memory batch" from the menu
of GX Developer to monitor the buffer memory, and backup the data.
POINT
If a CPU continuation error (such as SP. UNIT DOWN, UNIT VERIFY ERR.) has
occurred due to an error in the change-target module, data in the buffer memory
cannot be saved.
Signal name
Setting/operation mode command
FeRAM backup start command
Default setting registration start command
Setting change command
MELSEC-Q
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