Sinee EM500 - Data Frame Length

EM500 Open-Loop Vector Control Inverter User Manual
407
7230H
Warning Number
others -
73FFH
Not Used
Product
Informat
ion
7500H
-
75FFH
7500H
Performance Software
Serial Number 1
Correspond to F12.22
7501H
Performance Software
Serial Number 2
Correspond to F12.23
7502H
Function Software
Serial Number 1
Correspond to F12.24
7503H
Function Software
Serial Number 2
Correspond to F12.25
7504H
Keypad Software Serial
Number 1
Correspond to F12.26
7505H
Keypad Software Serial
Number 2
Correspond to F12.27
7506H
Product Serial Number
1
Correspond to F12.28
7507H
Product Serial Number
2
Correspond to F12.29
7508H
Product Serial Number
3
Correspond to F12.30
7509H -
75FFH
Not Used
Other
Not Used
12.3.5 Data Frame Length
The number of read/write registers for PDU of RTU frame of MODBUS message
falls into the scope between 1 and 16. As for different function codes, the actual lengths
of RTU frames are different. See Table 12-3 for details.
Table 12-3 RTU Length and Function Codes
Function Code
RTU frame length (byte)
Maximum
Length(Byte)
Normal
response
Normal
response
Abnormal
response
03
8
5+2Nr
[4]
5
37
41 (06)
8
8
5
8