Mitsubishi Electric MELSEC iQ-R Series - Accessible Modules

18 COMMUNICATING USING 1E FRAMES
18.6 Read and Write Buffer Memory of Special Function Module
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Byte length
Specify the byte length of the buffer memory to be read or written.
Specify '00' for 256 bytes.
■Data communication in ASCII code
Convert the numerical value to 2-digit ASCII code (hexadecimal), and send it from the upper digits.
■Data communication in binary code
Send a 1-byte numerical value.
Ex.
For 5 bytes, 20 bytes, 256 bytes.
Read data, write data
The read buffer memory value is stored for reading, and the data to be written is stored for writing.
This function reads and writes data in byte units.
Page 162 Read data, write data
Special function module No.
Specify the last input/output signal (I/O address) of the special function module. (Specify the upper 2-digit of 3-digit
representation.)
The value to specify is the same as 1C frame.
Page 384 Special function module No.
■Data communication in ASCII code
Convert the numerical value to 2-digit ASCII code (hexadecimal), and send it from the upper digits.
■Data communication in binary code
Send a 1-byte numerical value.
Accessible modules
Special function modules that can be accessed buffer memory are the same as 1C frame.
Page 385 Accessible modules
Number of device points ASCII code Binary code
5 bytes
20 bytes
256 bytes
30 H
35 H
05
05 H
31 H
34 H
1 4
14 H
30H
30H
00
00 H