Mitsubishi Electric MELSEC iQ-R Series User Manual page 271

■Combination
Only the following combinations can be used for arrangement of on-demand data by user frame specification.
: designated data
Combination Data name
Start frame (1st)

1

2

3
4 

5
6 

7
8 
■Description of data to be transmitted
• The outline of data to be transmitted for on-demand data transmission by user frame specification is shown below.
Contents of data to be transmitted
User frame
• Start frame (1st)
• Final frame (Last 1 frame)
User frame
• Start frame (2nd)
• Final frame (Other than last 1
frame)
Send data
( MELSEC Communication
Protocol Reference Manual)
Start frame (2nd) Send data
 
 
 




The portions of which registered code
is from 00H to FEH
Combined portions of which
registered code is FFH and 00H to
FFH
The portions of which registered code
is from 00H to FEH
Combined portions of which
registered code is FFH and 00H to
FFH

14 ON-DEMAND DATA COMMUNICATIONS USING USER FRAMES
14.2 User Frame On-Demand Data Transmission and Buffer Memory Used
Final frame (1st)




Communication with ASCII
code
The data of the code registered in C24 is transmitted. (No conversion)
The data according to the user-designated contents, code, and number of
bytes is transmitted.
The data of the code registered in
C24 is converted to ASCII data and
transmitted.
The data of the contents, code, and
number of bytes designated by the
user to ASCII data and transmitted.
The designated send data is
converted to ASCII data and
transmitted.
Final frame (2nd)


Communication wit binary
code
The data of the code registered in
C24 is transmitted.
For 10H data, the data of 10H + 10H
is transmitted.
The data of the contents, code, and
number of bytes designated by the
user is transmitted.
For 10H data, the data of 10H + 10H
is transmitted.
The designated send data is
transmitted by the code unchanged.
(No conversion)
For 10H data, the data of 10H + 10H
is transmitted.
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