Batch Read (Bit Units) (Command: Br, Jr) - Mitsubishi Electric MELSEC IQ-R series Reference Manual

Batch read (bit units) (command: BR, JR)

Reads bit devices (X, Y, M, etc.) in batch.
Message format
The following shows the message format of the request data and response data of the command.
■Request data
Command Message wait
■Response data
The value of read device is stored in bit units. (Page 74 Read data, write data)
Data specified by request data
■Command
ACPU common
B
42
H
■Message wait
Specify the delayed time of the response transmission. (Page 347 Message wait)
■Head device
Specify the head device. (Page 351 Device codes, device numbers)
■Number of device points
Convert the numerical value to 2-digit ASCII code (hexadecimal), and send it from the upper digits.
Specify the number of device points within the following range:
• 1  Number of device points  256 (for 256 points, specify '00H')
• Head device No. + Number of device points - 1  Maximum device No.
17 COMMUNICATING USING 1C FRAMES
354
17.4 Device Memory Read and Write
Number of
Head device
device points
AnA/AnUCPU common
R
52
H
J R
4A 52
H H