gefran VDI100 Series User Manual

ReadHoldingRegister[03H]
Read consecutive holding registers. The address of the rst holding register is specied in the protocol
Example: Read frequency command from the inverter with node address 1.
ASCII Mode
Command Message Response Message (Normal) Response Message (Error)
3AH STX 3AH STX 3AH STX
30H
Node Address
30H
Node Address
30H
Node Address
31H 31H 31H
30H
Function
30H
Function
38H
Function
33H 33H 33H
30H
Starting Register
30H
Data Length
30H
Exception code
31H 32H 34H
32H 31H
Initial Save Register
34H
LRC CHECK
33H 37H 30H
30H
Number of
Registers
37H 0DH
END
30H 30H 0AH
30H ?
LRC CHECK
31H ?
?
LRC CHECK
0DH
END
? 0AH
0DH
END
0AH
RTU Mode
Command Message Response Message (Normal) Response Message (Error)
Node Address 01 H Node Address 01H Node Address 01H
Function 03H Function 03H Function 83H
Starting
Register
High 0CH Data Length 02H Exception code 04H
Low 10H
Initial Save
Register
High 17H
CRC-16
High 40H
Number of
Registers
High 00H Low 70H Low F3H
Low 01H
CRC-16
High B6H
CRC-16
High 86H Low 50H
Low 9FH
Loopbacktest[08H]
Check the communication between the master and the follower (inverter). The data used can be arbitrary.
ASCII Mode
Command Message Response Message (Normal) Response Message (Error)
3AH STX 3AH
Node Address
3AH STX
30H
Node Address
30H 30H
Node Address
31H 31H
Function
31H
30H
Function
30H 38H
Function
38H 38H
Test Code
38H
30H
Test Code
30H 30H
Exception code
30H 30H 33H
30H 30H 30H
LRC CHECK
30H 30H
DATA
36H
41H
DATA
41H
0DH
END
0AH
35H 35H
33H 33H
37H 37H
LRC CHECK
31H
LRC CHECK
31H
42H 42H
END0DH
END
0DH
0AH 0AH
VDI100 • Instruction manual 299

gefran VDI100 Series Specifications

General

Brand	gefran
Model	VDI100 Series
Category	Inverter
Language	English