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MELSEC-Q
8 ONLINE MODULE CHANGE
8.3.2 Sequence program was used for initial setting
(1) Operation stop
(a) Turn OFF all output signals (Y devices) from the sequence program or the
device test of GX Developer to stop the module operation.
(b) Prerecord the writable buffer memory contents that have been set initially in
the sequence program.
Choose [Online] - [Monitor] - [Buffer memory batch] on GX Developer,
monitor the buffer memory, and record the values.
POINT
If a CPU continuation error (e.g. SP. UNIT DOWN, UNIT VERIFY ERR.) has
occurred due to the fault of the module to be changed, the buffer memory contents
cannot be confirmed.
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