Field Name
Example (HEX)
Slave Address
01
Function
06
Register Address HI
03 (Register address 999)
Register Address LO
E7 (Register address 999)
Preset Data HI
00
Preset Data LO
01
Error Check (CRC)
-
Response
The normal response is an echo of the query, returned
after the register contents have been passed.
Field Name
Example (HEX)
Slave Address
01
Function
06
Register Address HI
03
Register Address LO
E7
Preset Data HI
00
Preset Data LO
01
Error Check (CRC)
-
8.10.6 Preset Multiple Registers (10 HEX)
Description
This function presets values into a sequence of holding
registers.
Query
The query message specifies the register references to be
preset. Register addresses start at zero, i.e. register 1 is
addressed as 0. Example of a request to preset two
registers (set
1-24 Motor Current
to 738 (7.38 A)):
Field Name
Example (HEX)
Slave Address
01
Function
10
Starting Address HI
04
Starting Address LO
19
No. of Registers HI
00
No. of registers LO
02
Byte Count
04
Write Data HI
(Register 4: 1049)
00
Write Data LO
(Register 4: 1049)
00
Write Data HI
(Register 4: 1050)
02
Write Data LO
(Register 4: 1050)
E2
Error Check (CRC)
-
Response
The normal response returns the slave address, function
code, starting address, and quantity of registers preset.
Field Name
Example (HEX)
Slave Address
01
Function
10
Starting Address HI
04
Starting Address LO
19
No. of Registers HI
00
No. of registers LO
02
Error Check (CRC)
-
8.11 Danfoss FC Control Profile
8.11.1 Control Word According to FC
Profile (8-10 Protocol = FC profile)
Speed ref.
CTW
Master-slave
130BA274.10
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Bit
no.:
Bit
Bit value = 0
Bit value = 1
00
Reference value
external selection lsb
01
Reference value
external selection msb
02
DC brake
Ramp
03
Coasting
No coasting
04
Quick stop
Ramp
05
Hold output
frequency
use ramp
06
Ramp stop
Start
07
No function
Reset
08
No function
Jog
09
Ramp 1
Ramp 2
10
Data invalid
Data valid
11
Relay 01 open
Relay 01 active
12
Relay 02 open
Relay 02 active
13
Parameter set-up
selection lsb
15
No function
Reverse
Explanation of the Control Bits
Bits 00/01
Bits 00 and 01 are used to choose between the four
reference values, which are pre-programmed in
3-10 Preset
Reference
according to the
:
RS485 Installation and Set-...
VLT Micro Drive Design Guide
82
MG02K102 - VLT
®
is a registered Danfoss trademark
8
8