Mitsubishi MELSEC LJ71C24, Руководство пользователя

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Term Description
Predefined protocol support function
A function available in GX Works2 and GX Configurator-SC (Predefined protocol support
function), which includes:
• Registration of the protocol appropriate to each target device
• Writing protocol setting data to or reading them from the flash ROM of the C24
• Debug support function
Nonprocedural protocol
A user's communication procedure and one of the data communication functions for
communicating any data between the CPU module and a target device.
Bidirectional protocol
A communication procedure for the C24 and one of the data communication functions for
communicating any data between the CPU module and a target device
Data communication function
Generic term for the MC protocol, predefined protocol, nonprocedural protocol, and bidirectional
protocol
Buffer memory
The memory of an intelligent function module and special function module used to store data
(such as setting values and monitored values) for communication with a CPU module.
Packet A data string used for communication with target devices by the predefined protocol.
Multidrop connection
A name of the connection when multiple target devices or other C24 are connected in a 1:n or
m:n mode using the RS-422/485 interface of the C24.
Message send function
(Printer function)
This function registers character data (messages) to be sent to target devices (mainly printers) in
the C24 as a user frame in advance, and sends the registered data for multiple user frames using
the nonprocedural protocol.
User frame
Data name when the fixed format portion of messages to be sent or received between the C24
and a target device is registered in the module and used for sending and receiving data. (The
contents of a user frame data should conform to the specifications of the target device).
The data array of the head and tail sections of a message (transmission control code, C24 station
number, sum check, fixed data, etc.) to be sent and received is registered in the C24 before use.
This type of data is used in the on-demand function of the MC protocol and the data
communication function with the nonprocedural protocol.
Independent operation
A mode of interface operation to communicate data with target devices using a function specified
in each communication protocol setting. The interfaces of two C24s do not interact.
Linked operation
The operation mode of each of the two interfaces of C24s that are connected to target devices
and linked to one another in order to send/receive data to/from the target devices.
The two interfaces communicate data using the same data-communication function (MC protocol
(identical type) or nonprocedural protocol) and the same transmission specifications. (Linked
operation using the predefined protocol or bidirectional protocol is not allowed.)
BUFRCVS Abbreviation for Z.BUFRCVS
CPRTCL Abbreviation for G.CPRTCL or GP.CPRTCL
CSET Abbreviation for ZP.CSET
GETE Abbreviation for G.GETE or GP.GETE
INPUT Abbreviation for G.INPUT
ONDEMAND Abbreviation for G.ONDEMAND or GP.ONDEMAND
OUTPUT Abbreviation for G.OUTPUT or GP.OUTPUT
PRR Abbreviation for G.PRR or GP.PRR
PUTE Abbreviation for G.PUTE or GP.PUTE
SPBUSY Abbreviation for G.SPBUSY or GP.SPBUSY
UINI Abbreviation for ZP.UINI
User's Manual (Application) Abbreviation for the Serial Communication Module User's Manual (Application)