Mitsubishi Q00JCPU User Manual page 220

5
MEMORIES AND FILES HANDLED BY CPU MODULE
5
5.2 High Performance Model QCPU, Process CPU and Redundant CPU
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5.2.6 Write to standard ROM and Flash card by GX Developer
(c) Time required for write to PLC (Flash ROM)
Using the Write to PLC (Flash ROM) writes data over the entire space of the
standard ROM or Flash card.
Therefore, even if a program written to the Flash card has a small number of
steps, long time will be taken until completion since data are written to the entire
space of the Flash card.
(Approx. 14 minutes will be taken when writing to the Q2MEM-4MBF at a
communication speed of 115.2kbps using an RS-232 interface.)
When writing data to the Flash card, increase the transmission speed or use USB.
Long communication time will be also required for the write to PLC (Flash ROM)
from the other station.
(d) Online program change (enabled for write to PLC (Flash ROM) only)
Write to PLC (Flash ROM) can be executed online.
In either of the following cases, however, execute the write to PLC (Flash ROM)
after setting the PLC to the STOP status.
1) The file registers on the Flash card are used in the sequence program.
2) File registers are set to "Not used" in the PLC parameter dialog box but they
are used in the sequence program.
If write to PLC (Flash ROM) is performed in either of above 1) or 2), an error may
occur, stopping the High Performance model QCPU, Process CPU or Redundant
CPU.
(e) Read/write during write to PLC (Flash ROM)
While write to PLC (Flash ROM) is being executed, reading/writing from the other
modules is disabled.
Hence, a time-out may occur in the other modules.
(f) When write to PLC (Flash ROM) is performed in STOP status
When write to PLC (Flash ROM) is performed in the STOP status, do not select
the RUN status during writing.
The CPU module cannot be turned to RUN during write to PLC (Flash ROM).
Set it to RUN after completion of write to PLC (Flash ROM).