Process Data; Status Coil Maps; Control Word Bit Descriptions For Vlt 2800 - Danfoss VLT 2800 Series Operating Instructions Manual

å Process Data
Process Data is illustrated as coils in Modbus RTU.
å Status Coil Maps
(128 coils total)
Note: The coil number shown in the following table
must be transmitted as ("shown value-1") in MODBUS
telegrams (e.g. Coil number 0:00001 is transmitted
as address 0000 in the MODBUS telegram).
å Control Word Bit Descriptions for VLT 2800
The control word is used to send commands from a
master (e.g. a PC) to a slave (frequency converter).
Bit Bit = 0
00
01
02 DC braking
03 Coasting stop
04 Quick stop
05 Freeze outp. freq.
06 Ramp stop
07
08
09 Ramp 1
10 Data not valid
11 No function
12 No function
13 Select Setup, lsb
14 Select Setup, msb
15
MG.10.S1.22 - VLT is a registered Danfoss trademark
VLT® Serie 2800 and VLT® Serie 6000 Modbus RTU
Bit =1
Preset ref. lsb
Preset ref. msb
Start
Reset
Jog
Ramp 2
Data valid
Relay 01 activated
Digital output
Terminal 46
activated
Reversing
Coil Description
Number
Control Word (master → slave)
1-16 PCD
1
Reference Value (master →
17-32 PCD
2
slave)
Status Word (slave → master)
33-48 PCD
1
49-64 PCD Given output frequency (slave
2
→ master)
65 Write parameters to eeprom (1 = true
/ 0 = false)
66-128 Reserved
Bit 00/01:
Bit 00/01 is used to select between the two
pre-programmed references (parameters 215-218
Preset reference) according to the following table:
Preset ref. Parameter
1 215
2 216
3 217
4 218
NOTE
In parameter 508 Selection of preset
reference a selection is made to define how
Bit 00/01 gates with the corresponding
function on the digital inputs.
Bit 02, DC brake:
Bit 02 = '0' causes DC braking and stop. Brake
voltage and duration are preset in parameters
132 DC brake voltage and parameter 126 DC
braking time. Note: In parameter 504 DC brake a
selection is made to define how Bit 02 gates with the
corresponding function on a digital input.
Bit 01 Bit 00
0 0
0 1
1 0
1 1
19