Program Reuse - Mitsubishi Electric MELSEC-A0J2H Series Handbook

8
REPLACING THE COMMUNICATION MODULES

8.6 Program Reuse

The following shows the precautions for reusing the existing programs as the Q series serial
communication module program when changing modules.
Item
Initial settings
Dedicated protocol
communication (MC
protocol communication)
Nonprocedural
communication
(Nonprocedural protocol
communication)
Others
*1 Access only to the programmable controller CPU device memory is possible.
Accessible devices are those in the device range when ACPU common commands are used. Also, the following devices
cannot be accessed from a device on the other end.
• Latch relay (L) and Step relay (S)
For the QCPU, the latch relay (L) and step relay (S) is a separate device from the internal relay (M), but any
*
can be specified and access the internal relay.
• File register (R)
• Special relay (M9000 or later), special register (D9000 or later)
*2 When using non-accessible devices (*1) and access functions outside device memory, use the Q series serial
communication module's new commands to gain access.
(Change the program of the device on the other end.)
Target device
[Initial settings]
Initialize settings using the intelligent function module setting of
Programmable controller
GX Works2 or GX Configurator-SC.
CPU side
[Delete initial setting program]
Delete the initial setting program.
[Access to programmable controller CPU]
The usable commands, accessible device range, and access to
Device on the other end
other stations are restricted.
[Data transmission/reception]
Programmable controller
Change to a sequence program that uses the dedicated
CPU side
instruction (OUTPUT/INPUT).
[I/O signal assignment]
Programmable controller I/O signal (X/Y) assignment on the A0J2H series and the Q
CPU side series is not compatible.
Confirm the I/O signal (X/Y) being used and correct the program.
[Buffer memory assignment]
Programmable controller Buffer memory assignment on the A0J2H series and the Q
CPU side and device on series is not compatible.
the other end. Confirm the buffer memory and address of the read/write data,
and correct the program.
Precautions
*1*2
Remarks
Refer to the Q
Corresponding Serial
Communication Module
User's Manual (Basic).
Refer to the Q
Corresponding Serial
Communication Module
User's Manual (Basic).
Refer to the MELSEC
Communication Protocol
Reference Manual.
Refer to the Q
Corresponding Serial
Communication Module
User's Manual (Basic).
Refer to the Q
Corresponding Serial
Communication Module
User's Manual (Basic).
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