Mitsubishi MELSEC LJ71C24, Руководство пользователя

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9 DATA COMMUNICATION USING THE PREDEFINED PROTOCOL
(2) Static Data
Use this element when a specific code/character string such as command exists
in a packet.
y When sending: Sends a specified code and character string.
y When receiving: Verifies the receive data.
Multiple Static Data elements can be placed to desired positions in the data
division.
The items are the same as ones explained in Section 9.3 (1) in this section.
(3) Terminator
This element indicates the end of a packet. Use this element when a
code/character string indicating the end of the packet is included.
The following table lists the items.
Item Description Remark
Element Name Set a name of the element. -
Code Type
Set a data type of the setting value.
ASCII String/ASCII Control Code/HEX
-
Set data within 1 to 50 bytes.
Code type Setting range
ASCII String 20
H
to 7F
H
ASCII Control Code 00
H
to 1F
H
, and 7F
H
of control code
HEX 00
H
to FF
H
of hexadecimal data
Setting Value
(Setting example)
ASCII String
: "ABC"
ASCII Control Code: STX
HEX
: FFFF
POINT
y Only one Terminator can be placed in a packet.
y Only a Check code and Static Data can be placed behind a terminator.