Coil Number Description Signal Direction
1-16 Frequency converter control word (see table below) Master to slave
17-32 Frequency converter speed or set-point reference Range 0x0 – 0xFFFF (-200% ...
~200%)
Master to slave
33-48 Frequency converter status word (see table below) Slave to master
49-64 Open loop mode: Frequency converter output frequency Closed loop mode: Frequency
converter feedback signal
Slave to master
65 Parameter write control (master to slave) Master to slave
0 = Parameter changes are written to the RAM of the frequency converter
1 = Parameter changes are written to the RAM and EEPROM of the frequen-
cy converter.
66-65536 Reserved
Coil 0 1
01 Preset reference LSB
02 Preset reference MSB
03 DC brake No DC brake
04 Coast stop No coast stop
05 Quick stop No quick stop
06 Freeze freq. No freeze freq.
07 Ramp stop Start
08 No reset Reset
09 No jog Jog
10 Ramp 1 Ramp 2
11 Data not valid Data valid
12 Relay 1 off Relay 1 on
13 Relay 2 off Relay 2 on
14 Set up LSB
15 Set up MSB
16 No reversing Reversing
Frequency converter control word (FC profile)
Coil 0 1
33 Control not ready Control ready
34 Frequency converter not
ready
Frequency converter ready
35 Coasting stop Safety closed
36 No alarm Alarm
37 Not used Not used
38 Not used Not used
39 Not used Not used
40 No warning Warning
41 Not at reference At reference
42 Hand mode Auto mode
43 Out of freq. range In frequency range
44 Stopped Running
45 Not used Not used
46 No voltage warning Voltage warning
47 Not in current limit Current limit
48 No thermal warning Thermal warning
Frequency converter status word (FC profile)
Holding registers
Register Number Description
00001-00006 Reserved
00007 Last error code from an FC data object interface
00008 Reserved
00009 Parameter index*
00010-00990 000 parameter group (parameters 001 through 099)
01000-01990 100 parameter group (parameters 100 through 199)
02000-02990 200 parameter group (parameters 200 through 299)
03000-03990 300 parameter group (parameters 300 through 399)
04000-04990 400 parameter group (parameters 400 through 499)
... ...
49000-49990 4900 parameter group (parameters 4900 through 4999)
50000 Input data: Frequency converter control word register (CTW).
50010 Input data: Bus reference register (REF).
... ...
50200 Output data: Frequency converter status word register (STW).
50210 Output data: Frequency converter main actual value register (MAV).
* Used to specify the index number to be used when accessing an indexed parameter.
VLT
®
HVAC Drive Design Guide 7 RS-485 Installation and Set-up
MG.11.B9.02 - VLT
®
is a registered Danfoss trademark
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