Bit Zugriff - BONFIGLIOLI Vectron Agile Communications Manual

9.1.2

32 Bit Zugriff

9.1.2.1 Function Code 3, Read 32-Bit Parameter
Example 1:
Reading parameter
address 1.
Request: Master  Frequency Inverter
Field: Addr.
Hex 01
Response: Frequency Inverter  Master
Field: Addr.
Hex 01
The hexadecimal value sent is 0x03E8 = 1000. Parameter
places.
Therefore, the frequency is 10.00 Hz.
Example 2:
Reading parameter
address 1 and No. of Regs field set to 1 (invalid value).
Request: Master  Frequency Inverter
Field: Addr.
Hex 01
Error Response: Frequency Inverter  Master
Field: Addr.
Hex 01
The exception code sent is hexadecimal value 0x04 = SLAVE DEVICE FAILURE.
48
Fixed Frequency 2
481 (0x01E1) in data set 1 from the frequency inverter with
Func. DSet/Par-No.
03 11 E1
Func. No.Bytes
03 04 00
Fixed Frequency 2
481 (0x01E1) in data set 0 from the frequency inverter with
Func. DSet/Par-No.
03 01 E1
Func. Except. CRC
83 04 40
No. of Regs CRC
00 02 91
Par-Value
00 03 E8
Fixed Frequency
No. of Regs CRC
00 01 D5
F3
Modbus Agile
Modbus Message Examples
01
CRC
FA 8D
481 has two decimal
C0
02/2011