Batch Read (Command: 17) - Mitsubishi Electric MELSEC IQ-R series Reference Manual

Batch read (command: 17)

Read extended file register (R) in 1-point units.
Message format
The following shows the message format of the request data and response data of the command.
■Request data
(ASCII code)
Block No. Device number
(Binary code)
Device number Block No.
■Response data
The data for the number of device points are stored.
The order of data differs depending on the ASCII code or binary code. (Page 402 Read data, write data)
Data specified by request data
■Device number
Specify the head device of the extended file register to be read. (Page 418 Device number)
■Block number
Specify the block number of the extended file register to be read. (Page 418 Block number)
■Number of device points
Specify the points of extended file register to be read.
Specify '00H' when the number of device points is 256 points. (Page 402 Number of device points)
Number of device
0 0
points
30 30
H H
Number of device
points
00
H
18 COMMUNICATING USING 1E FRAMES
18.5 Read and Write Extended File Register
18
419