gefran VDI100 Series Instruction Manual page 300

RTU Mode
Command Message
Node Address
Function
High
Test Code
Low
High
DATA
Low
High
CRC-16
Low
Write Single Holding Register [06H]
Write single holding register. The register address of the holding register is specified in the message.
Example: Write a 60.00Hz frequency command to node address 1.
ASCII Mode
Command Message
3AH
30H
31H
30H
36H
32H
35H
Starting Register
30H
32H
31H
37H
37H
30H
34H
42H
0DH
0AH
RTU Mode
Command Message
Node Address
Function
High
Start No
Low
High
DATA
Low
High
CRC-16
Low
Write Multiple Holding Register [10H]
Write multiple holding registers. The address of the first holding register is specified in the message.
Example: Write a 60.00Hz frequency command to node address 1 and enable FWD run command.
300
01 H
08H
00H
Test Code
00H
A5H
37H
DAH
CRC-16
8DH
STX
Node Address
Function
DATA
LRC CHECK
END
01 H
08H
25H
Start No
02H
17H
70H
2DH
CRC-16
12H
Response Message (Normal)
Node Address 01H
Function 08H
High 00H
Low 00H
High A5H
DATA
Low 37H
High DAH
Low 8DH
Response Message (Normal)
3AH STX
30H
Node Address
31H
30H
Function
36H
32H
35H
Starting Register
30H
32H
31H
37H DATA
37H
30H
34H
LRC CHECK
42H
0DH
END
0AH
Response Message (Normal)
Node Address 01H
Function 06H
High 25H
Low 02H
High 17H
DATA
Low 70H
High 2DH
Low 12H
Response Message (Error)
Node Address 01H
Function 88H
Exception code 03H
High 06H
CRC-16
Low 01H
Response Message (Error)
3AH STX
30H
Node Address
31H
38H
Function
36H
30H
Exception code
33H
30H
LRC CHECK
32H
0DH
END
0AH
Response Message (Error)
Node Address 01H
Function 86H
Exception code 03H
High 02H
CRC-16
Low 61H
VDI100 • Instruction manual