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VLT is a registered Danfoss trade mark MG.10.P2.22
Message
Translation
Examples
(continued)
EXAMPLE TWO: Ramp Stop Motor
Message sent to Modbus RTU option card from Modbus masterMessage sent to Modbus RTU option card from Modbus master
Message sent to Modbus RTU option card from Modbus masterMessage sent to Modbus RTU option card from Modbus master
Message sent to Modbus RTU option card from Modbus master
Modbus message string:
[01] [0F] [00] [00] [00] [20] [04] [3C] [04] [00] [00] [89] [19]
{
Stop Command: 0000010000111100 = 043C
HEX
(reversed)
(see FC Protocol Control Word Bit Descriptions)
Speed Command: 0%
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7
Slave
Addres
Function Coil Addr HI Coil Addr LO # of Coils HI # of Coils LO Byte Count Force Data HI
Coils (0-7)
01 0F 00 00 00 20 04 3C
Byte 8 Byte 9 Byte 10 Byte 11
Force Data
LO
Coils (8-15)
Force Data HI
Coils (1 -23)
Force Data
LO
Coils (2 -31)
Error Check
04 00 00 [89] [19]
Message rMessage r
Message rMessage r
Message r
eturetur
eturetur
etur
ned to Modbus master frned to Modbus master fr
ned to Modbus master frned to Modbus master fr
ned to Modbus master fr
om Modbus Rom Modbus R
om Modbus Rom Modbus R
om Modbus R
TU option carTU option car
TU option carTU option car
TU option car
dd
dd
d
EXAMPLE THREE: Coast Stop Motor
All values are in hexadecimal.
Message sent to Modbus RTU option card from Modbus masterMessage sent to Modbus RTU option card from Modbus master
Message sent to Modbus RTU option card from Modbus masterMessage sent to Modbus RTU option card from Modbus master
Message sent to Modbus RTU option card from Modbus master
Message rMessage r
Message rMessage r
Message r
eturetur
eturetur
etur
ned to Modbus master frned to Modbus master fr
ned to Modbus master frned to Modbus master fr
ned to Modbus master fr
om Modbus Rom Modbus R
om Modbus Rom Modbus R
om Modbus R
TU option carTU option car
TU option carTU option car
TU option car
dd
dd
d
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6
Slave
Address
Function Coil Addr HI Coil Addr LO No. of Coils
HI
No. of Coils
LO
Error Check
01 0F 00 00 00 20 --
Modbus message string:
[01] [0F] [00] [00] [00] [20] [04] [20] [2C] [00] [00] [ -- ]
{
Coast Command: 0010110000100000 = 2C20
HEX
(reversed)
(see FC Protocol Control Word Bit Descriptions)
Speed Command: 0%
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6
Slave
Address
Function Coil Addr HI Coil Addr LO No. of Coils
HI
No. of Coils
LO
Error Check
01 0F 00 00 00 20 --
Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7
Slav
Address
Function Coil Addr HI Coil Addr LO # of Coils HI # of Coils LO Byte Count Force Data HI
Coils (0-7)
01 0F 00 00 00 20 04 20
Byte 8 Byte 9 Byte 10 Byte 11
Force Data
LO
Coils (8-15)
Force Data HI
Coils (16-23)
Force Data
LO
Coils (24-31)
Error Chec
2C 00 00 --
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