Mitsubishi Electric MELSEC IQ-R series Reference Manual page 404

Number of device points
Specify the number of device points to be read or written.
Specify the number of device points in one command within the device points that can be processed in one communication.
Page 465 Number of Processing per One Communication
Specify '00' for 256 points.
■Data communication in ASCII code
Convert the numerical value to 2-digit ASCII code (hexadecimal), and send it from the upper digits.
Use capitalized code for alphabetical letter.
■Data communication in binary code
Send a 1-byte numerical value.
Ex.
5 points, 20 points, 256 points
Number of device points
5 points
20 points
256 points
Read data, write data
The read data is stored for reading, and the data to be written is stored for writing. The data order differs between bit units or
word units.
18 COMMUNICATING USING 1E FRAMES
402
18.4 Read and Write Device Memory
ASCII code
0 5
30 35
H H
1 4
31 34
H H
0 0
30 30
H H
Binary code
05
H
14
H
00
H