Fieldbus control 293
Input reference select
Using the fieldbus to provide input references to the drive requires:
• Drive parameter values set as defined below.
• Fieldbus controller supplied reference word(s) in the appropriate location. (The
location is defined by the Protocol Reference, which is protocol dependent.)
Reference scaling
Where required,
REFERENCES can be scaled. See the following, as appropriate:
• Modbus Register 40002 in the Modbus protocol technical data section.
• Reference scaling in the ABB control profiles technical data section.
• N2 analog output objects in the N2 protocol technical data section.
• The slope of points 60 and 61 in the FLN protocol technical data section.
Drive Parameter Value Setting
Protocol Reference
Modbus
N2 FLN BACnet
abb drv
dcu
profile
1102 EXT1/
EXT2 SEL
8
(COMM)
Reference set
selection by fieldbus.
40001
bit 11
40031
bit 5
BO5 26 BV13
1103 REF1
SEL
8
(COMM)
Input reference 1 by
fieldbus.
40002 AO1 60 AV16
1106 REF2
SEL
8
(COMM)
Input reference 2 by
fieldbus.
40003 AO2 61 AV17