Mitsubishi Electric MELSEC iQ-R Series User Manual page 100

Send data arrangement
The following example shows an arrangement of the send data to be sent to the target device when storing it in the send area.
Ex.
When transmitting "ABCDEFG123"
C24
Transmission area
(buffer memory)
Transmission data
count designation
Transmission data
designation
4 DATA COMMUNICATION USING BIDIRECTIONAL PROTOCOL
98
4.2 Transmitting Data to Target Device
5
(00 ) (05 )
H H
Sum
B A
check
(42 ) (41 )
H H code
D C
H L
(44 ) (43 )
H H
02 77
H
F E
(46 ) (45 )
H H
1 G
(31 ) (47 )
H H
3 2
(33 ) (32 )
H H
Transmission data
3 2 1 G F E D
33 32 31 47 46 45 44
H H H H H H H H
Receive data (response message)
ACK
06
H
(Normal completion)
Data
C B A
length
(0005H)
ENQ
H L
43 42 41 00 05
H H H H H
Target device