Mitsubishi MELSEC LJ71C24, User Manual

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TERMS
Unless otherwise specified, this manual uses the following terms.
Term Description
Q series C24 Another term for the MELSEC-Q series serial communication module
C24
L series C24
Another term for the MELSEC-L series serial communication module
QnA series serial communication
module
Another term for the MELSEC-QnA series serial communication module
A series computer link module Another term for the MELSEC-A series serial communication module
QCPU Another term for the MELSEC-Q series CPU module
CPU module Abbreviation for the MELSEC-L series CPU module
LCPU Another term for the MELSEC-L series CPU module
QnACPU Another term for the MELSEC-QnA series CPU module
ACPU Another term for the MELSEC-A series CPU module
Head module Abbreviation for the LJ72GF15-T2 CC-Link IE Field Network head module
Display unit A liquid crystal display to be attached to the CPU module
Intelligent function module
A MELSEC-L series module that has functions other than input or output, such as A/D converter
module and D/A converter module
Special function module
A MELSEC-QnA/A series modules that has functions other than input or output, such as A/D
converter module and D/A converter module
GX Works2
GX Developer
Product name of the software package for the MELSEC programmable controllers
GX Configurator-SC A setting and monitoring tool added in GX Developer (for serial communication modules)
MX Component An active X control library for serial communication
MC protocol
Abbreviation for the MELSEC communication protocol, a protocol to access a CPU module from
a target device in the Ethernet or serial communication
A compatible 1C frame
(Formats 1 to 4)
One of the message formats for the C24 for performing communication using the MC protocol
and ASCII data.
This is the same message format as when communicating using the dedicated protocol for the A
series computer link modules.
Device memory read/write operations for the QCPU and LCPU are allowed within the device
range of the AnACPU.
QnA compatible 2C frame
(Formats 1 to 4)
One of the message formats for the C24 for performing communication using the MC protocol
and ASCII data.
This is the same message format as the communication frame using the dedicated protocol for
the QnA series serial communication modules.
• QnA compatible 2C frame (Formats 1 to 4): QnA simplified frame (Formats 1 to 4)
QnA compatible 3C frame
(Formats 1 to 4)
QnA compatible 4C frame
(Formats 1 to 4)
One of the message formats for the C24 for performing communication using the MC protocol
and ASCII data.
This is the same message format as the communication frame using the dedicated protocol for
the QnA series serial communication modules.
• QnA compatible 3C frame (Formats 1 to 4): QnA frame (Formats 1 to 4)
• QnA compatible 4C frame (Formats 1 to 4): QnA extension frame (Formats 1 to 4)
QnA compatible 4C frame
(Format 5)
One of the message formats for the C24 for performing communication using the MC protocol
and binary code data.
This is the same message format as the communication frame using the dedicated protocol for
the QnA series serial communication modules.
• QnA compatible 4C frame (Format 5): QnA extension frame (Format 5)
Predefined protocol
One of the data communication functions available for the C24.
In data communication between the C24 and a target device, data can be sent and received by
using a protocol of the target device.
This must be set in GX Works2 or GX Configurator-SC (Predefined protocol support function).