Mitsubishi MELSEC Q Series Handbook

2 SERIAL COMMUNICATION MODULE REPLACEMENT
2 - 26
2.6.1 Reuse of A/AnS series programs
Data communications between programmable controller CPU and external device, and between
programmable controller CPUs that was performed by the A/AnS series computer link module can also
be performed using Q series serial communication modules.
The following shows a description of how to reuse programs for A/AnS series computer link module for
use on a Q series serial communication module at replacement of modules.
2.6 Reuse of Existing Programs
Item Relevant device Description Remarks
Initial setting
Programmable
controller CPU
[Initial Setting on the Utility Package]
Make the initial setting on the utility package (GX Configurator-
SC).
[Deleting the initial setting program]
Delete the initial setting program.
[Setting the sum check code of the bidirectional protocol]
When appending messages with the sum check code in
bidirectional protocol communications, set the switches in the
GX Developer PLC parameters.
Refer to the Q Corresponding
Serial Communication Module
User's Manual (Basic).
Communication using
dedicated protocol
(MC protocol
communication)
Programmable
controller CPU
[Access to another station]
When accessing other station's programmable controller CPU
via MELSECNET/H, set "Valid module during other station
access" in the GX Developer network parameters.
[Data transmission by the on-demand function]
Change to a sequence program that uses the dedicated
instruction (ONDEMAND).
• Refer to the GX Developer
Operating Manual.
• Refer to the Q Corresponding
Serial Communication Module
User's Manual (Basic).
• Refer to the MELSEC
communication protocol
reference manual.
Communication
target device
[Accessing the programmable controller CPU]
The available commands, accessible device range, and access
to another station are restricted.
*1 *2
[Access to another station]
Another station cannot be accessed via the data link system
(MELSECNET(II), MELSECNET/B).
Non-procedural
communication
(Non-procedural protocol
communication)
Programmable
controller CPU
[Transmission/reception of data]
Change to a sequence program that uses the dedicated
instructions (INPUT, OUTPUT).
Refer to the Q Corresponding
Serial Communication Module
User's Manual (Basic).
Communication
target device
[Transmission of data]
When receiving by the receive end code on the programmable
controller CPU side, transmit the data (default, CR+LF (codes:
0D
H
, 0A
H
)) of the end code at the end of the data to be
transmitted to the programmable controller CPU.
*3
Bidirectional
communication
(Bidirectional protocol
communication)
Programmable
controller CPU
[Transmission/reception of data]
Change to a sequence program that uses the dedicated
instructions (BIDIN, BIDOUT).
Transmission using printer
function
Programmable
controller CPU
[Printing messages on a printer]
When messages
*4
were being printed on a printer, create a
transmission program using user frames of the Q series serial
communication module.
*5
Delete programs that use the regular printer function.
Refer to the Q Corresponding
Serial Communication Module
User's Manual (Application).
Others
Programmable
controller CPU
[Assignment of I/O signals]
There is no compatibility in the I/O signal (X/Y) assignments
between the A/AnS series and the Q series.
Check the I/O signals (X/Y) in use, and correct the program.
Refer to the Q Corresponding
Serial Communication Module
User's Manual (Basic).
Programmable
controller CPU
and
Communication
target device
[Assignment of buffer memory]
There is no compatibility in the buffer memory assignments
between the A/AnS series and the Q series.
Check the target buffer memories and addresses of the data to
read/write, and correct the program.

Mitsubishi MELSEC Q Series Specifications

General

Brand	Mitsubishi
Model	MELSEC Q Series
Category	Controller
Language	English