Danfoss VLT HVAC Drive FC 100 Series Design Manual page 139

®
VLT HVAC Drive Design Guide
Coil 0
01 Preset reference LSB
02 Preset reference MSB
03 DC brake
04 Coast stop
05 Quick stop
06 Freeze freq.
07 Ramp stop
08 No reset
09 No jog
10 Ramp 1
11 Data not valid
12 Relay 1 off
13 Relay 2 off
14 Set up LSB
15 Set up MSB
16 No reversing
Frequency converter control word (FC profile)
Register Number
00001-00006
00007
00008
00009
00100-00999
01000-01999
02000-02999
03000-03999
04000-04999
...
49000-49999
500000
50010
...
50200
50210
* Used to specify the index number to be used when accessing an indexed parameter.
7.8.9. How to Control the Frequency Converter
This section describes codes which can be used in the function and data fields of a Modbus RTU message. For a complete description of all the message
fields please refer to the section Modbus RTU Message Framing Structure.
7.8.10. Function Codes Supported by Modbus RTU
Modbus RTU supports use of the following function codes in the function
field of a message:
1
No DC brake
No coast stop
No quick stop
No freeze freq.
Start
Reset
Jog
Ramp 2
Data valid
Relay 1 on
Relay 2 on
Reversing
Holding registers
Description
Reserved
Last error code from an FC data object interface
Reserved
Parameter index*
000 parameter group (parameters 001 through 099)
100 parameter group (parameters 100 through 199)
200 parameter group (parameters 200 through 299)
300 parameter group (parameters 300 through 399)
400 parameter group (parameters 400 through 499)
...
4900 parameter group (parameters 4900 through 4999)
Input data: Frequency converter control word register (CTW).
Input data: Bus reference register (REF).
...
Output data: Frequency converter status word register (STW).
Output data: Frequency converter main actual value register (MAV).
MG.11.B7.02 - VLT ® is a registered Danfoss trademark
7. RS-485 Installation and Set-up
Coil 0
33 Control not ready
34 Frequency converter not
ready
35 Coasting stop
36 No alarm
37 Not used
38 Not used
39 Not used
40 No warning
41 Not at reference
42 Hand mode
43 Out of freq. range
44 Stopped
45 Not used
46 No voltage warning
47 Not in current limit
48 No thermal warning
Frequency converter status word (FC profile)
1
Control ready
Frequency converter ready
Safety closed
Alarm
Not used
Not used
Not used
Warning
At reference
Auto mode
In frequency range
Running
Not used
Voltage warning
Current limit
Thermal warning
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