Danfoss VLT 5000 Instruction Manual page 22

Message EXAMPLE 4: Write Parameter 104,
Motor Frequency , with 60 Hz
Translation
(Data Type 6: UINT16)
Examples
(Conversion factor = 0)
(continued)
Modbus Function 06
Message sent to Modbus RTU option car Message sent to Modbus R Message sent to Modbus R
Message sent to Modbus R Message sent to Modbus R
Modbus message string:
[01] 06] [04] [0F] [00] [3C] [ error check ]
Modbus message string:
[01] 06] [04] [0F] [00] [3C] [ error check ]
Message r Message r
Message r Message retur Message r
EXAMPLE 5: Read Parameter 514,
Motor Current = 3 Amps
(Data Type 7: UINT32)
(Conversion Factor = -2)
Modbus Function 03
Message sent to Modbus RTU option car Message sent to Modbus R Message sent to Modbus R Message sent to Modbus R Message sent to Modbus R
Message sent to Modbus master fr Message sent to Modbus master fr
Message sent to Modbus master fr Message sent to Modbus master fr Message sent to Modbus master from Modbus R
MG.10.P2.22 - VLT is a registered Danfoss trademark
Preset Single Register
HEX
Byte 0 Byte 1
Slave Function
Address
01 06
Parameter 104 = 0F04
Note that the starting address of a register is the parameter number x 10 -1 in HEX.
104 x 10 = 1040 -1 = 1039 = 0F04
Speed (60 Hz) = 3C
etur etur ned to Modbus master fr ned to Modbus master fr
eturned to Modbus master fr etur ned to Modbus master fr ned to Modbus master from Modbus R
Byte 0 Byte 1
Slave Function
Address
01 06
All values are in hexadecimal.
Read Holding Registers
HEX
Byte 0 Byte 1
Slave Function
Address
01 03
Parameter 514 (5139) = 1413
Note that the starting address of a register is the parameter number x 10 -1 in HEX.
Byte 0 Byte 1 Byte 2
Slave Function Byte Count
Address
01 03
All values are in hexadecimal.
TU option card fr TU option car TU option car d from Modbus master d fr d fr om Modbus master om Modbus master om Modbus master
TU option car d fr om Modbus master
Byte 2 Byte 3
Register Register
Addr HI Addr LO
04 0F
(reversed)
HEX
(reversed)
HEX
HEX
om Modbus R om Modbus R
om Modbus RTU option car om Modbus R
Byte 2 Byte 3
Register Register
Addr HI Addr LO
04 0F
TU option car TU option car TU option car TU option card fr d from Modbus master d fr d fr d fr om Modbus master om Modbus master om Modbus master om Modbus master
Byte 2 Byte 3
Start Addr HI Start Addr LO
14 13
HEX
om Modbus R om Modbus R
om Modbus RTU option car om Modbus R
Byte 3 Byte 4
Data HI Data LO
(Reg 45140) (Reg 45140)
04 00
Byte 4 Byte 5
Preset Data Preset Data
HI LO
00 3C
TU option car TU option card d d d d TU option car
TU option car
Byte 4 Byte 5
Preset Data Preset Data
HI LO
00 3C
Byte 4 Byte 5
No. of Points No. of Points
HI LO
00 02
TU option car TU option card d d d d TU option car
TU option car
Byte 5 Byte 6
Data HI Data LO
(Reg 45141) (Reg 45141)
00 01 2C
Byte 6
Error Check
--
Byte 6
Error Check
--
Byte 6
Error Check
--
Byte 7
Error Check
--
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