Mitsubishi Electric QJ71C24N User Manual page 31

1 OVERVIEW
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(4) Data communication using the pre-defined protocol
(Details: Chapter 8, the Operating Manual (Pre-defined protocol support function))
(a) Data can be transferred by using a protocol for the external device.
GX Configurator-SC (Pre-defined protocol support function) allows simple
protocol setting required for communication with the external device (thermal
regulator, barcode reader, etc.)
A protocol can be selected from the pre-defined protocol library, or newly
created and edited.
Communication control programs appropriate to the target device, such as
programs for creating send packets and analyzing receive packets, can be
eliminated. This can reduce the steps for creating programs.
(b) Writing registered protocol setting data to the flash ROM reduces the volume
of the program to be written the programmable controller CPU.
The following is the procedure for the pre-defined protocol communication.
1) Use GX Configurator-SC (Pre-defined protocol support function) to select
or create/edit the protocol of the external device. Then write the protocol
setting data to the flash ROM of the QJ71C24N(-R2/R4).
2) With a dedicated instruction (CPRTCL), execute the protocol written to
the flash ROM.
(c) Use of the dedicated instruction (CPRTCL) allows a continuous execution of
up to eight protocols.
MELSEC-Q
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