IACDRIVE I5000 Series Operation Manual page 122

START
Node address
Command
Returned byte number
Higher byte of 0004H
Low byte of 0004H
High byte of 0005H
Low byte of 0005H
LRC CHK Lo
LRC CHK Hi
END Lo
END Hi
10.7.3 RTU mode, write 5000(1388H) into address 0008H, slave node address 02.
The request command is:
START
Node address
Command
High byte of data address
Low byte of data address
T1-T2-T3-T4 (transmission time of 3.5 bytes)
120
':'
'0'
'1'
'0'
'3'
'0'
'4'
'0'
'0'
'0'
'0'
'0'
'0'
'0'
'0'
'F'
'8'
CR
LF
02H
06H
00H
08H