Mitsubishi Electric MELSEC IQ-R series Reference Manual page 389

Communication example
Read data of 4 bytes under the following conditions.
• Message wait: 0 ms
• Start address: 7FOH
• Byte length: 4 bytes
• Special function module No.: 13 (input/output signals are 120H to 13FH)
(Request data)
Message wait Start address
T R 0 0 0 7 F
54 52 30 30 30 37 46
H H H H H H H
(Response data)
Data read
1 2 7 8 4 3 6
31 32 37 38 34 33 36
H H H H H H H
7F0H 7F2H
Byte length Special function module No.
0 0 4 1 3
30 30 34 31 33
H H H H H
Buffer memory
Start address
(7F0H) 7812H
5
35
6543H
H (7F2H)
17 COMMUNICATING USING 1C FRAMES
17.6 Read and write Buffer Memory of Special Function Module
17
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