12
vacon • 100
Appendix C - Fieldbus Process Data
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
12.
A
PPENDIX
C - F
IELDBUS
P
ROCESS
D
ATA
MAPPING
AND
SCALING
Fieldbus process data items can be used to write and read variables quickly and periodically to/from
VACON
®
AC drives. Incoming process data can be used for multiple different purposes (e.g. torque
reference), and outgoing process data can be used for information about the state of the AC drive.
For fast access to any VACON
®
AC drive application ID over any fieldbus, generic Process Data Out
parameters are defined. The content of the process data items are selected with the FB DataOut Sel
parameters. Writing any application ID number to these parameters will then map the data value of
that application ID to be sent in the corresponding Process Data Out variable.
Figure 19 illustrates how the fieldbus data mapping (FB DataOut x Sel) affects the data of the
corresponding Process Data Out variable. By writing ID value 1 to FB DataOut1 Sel (ID 852), the value
of ID 1 (Output Frequency) is sent in Process Data Out 1. The value is always raw value in process
data out, so e.g. 16.43 Hz has value 1643. The scaling of the parameters can be checked from
application manuals.
The status word and actual speed values cannot be changed, however the values sent by the fieldbus
protocol might differ if a profile is used. In Bypass mode, these values are given as is.
Figure 19. Fieldbus Datamapping
Table 126. Fieldbus Process Data Selection Panel Tree for VACON
®
AC drives
Parameter name
ID
Panel Tree
VACON
®
100 family
VACON
®
NXP **
VACON
®
20
VACON
®
20 X/CP
FB DataOut 1 Selection
852
P3.6.1
P2.13.3
P10.1
P11.1
FB DataOut 2 Selection
853
P3.6.2
P2.13.4
P10.2
P11.2
...
...
...
...
...
...
FB DataOut 8 Selection
859
P3.6.8
P2.13.10
P10.8
P11.8
FB DataOut 9 Selection*
*
-
*
-
-
#
Value
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
37
Fieldbus DataMap
11845_uk
ID
Value
1
Output Frequency
2
Motor Speed
3
Motor Current
4
Motor Torque
5
Motor Power
6
Motor Voltage
7
DC-link Voltage
...
...
Vacon
®
ID’s
Value
16.43 Hz
486 rpm
0.12 A
4.9%
1.6%
80.2 V
332 V
37
LastActiveFaultCode
172
Rem Control Place
600
Control Mode
852
FB DataOut 1 Sel
...
...
859
FB DataOut 8 Sel
...
...
864
FB Speed Word
0
0=I/O Control
0=I/O Frequency Ctrl
Item
Process Data Out 1
Process Data Out 2
Process Data Out 3
Process Data Out 4
Process Data Out 5
Process Data Out 6
Process Data Out 7
Process Data Out 8
Fieldbus ProcessData
Value
1643
486
12
49
16
802
332
Fixed Status Word
General Status Word
Actual Speed
0x0023
0
0x2000
3284
1
...
37
0x20000023
865
FB Speed Actual
...
...
32.84%
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