KROHNE MFC 400 EN - Manual (Page 140)

9
DESCRIPTION OF HART INTERFACE
140
MFC 400
www.krohne.com 08/2013 - 4002075802 - MA MFC 400 R02 en
For the dynamic variables connected to the linear analogue outputs for current and/or
frequency, the assignment of the device variables takes place by selecting the linear
measurement for these outputs under the appropriate function of the signal converter. It follows
that the dynamic variables connected to current or frequency outputs can only be assigned to the
linear HART
® device variables.
The HART ® dynamic variable PV is always connected to the HART ® current output.
A totaliser device variable can thus not be assigned to the dynamic variable PV because the PV is
always connected to the HART
® current output.
Such correlations do not exist for dynamic variables not connected to linear analogue outputs.
Both linear and totaliser device variables can be assigned.
The totaliser device variables can only be assigned to the dynamic variables SV, TV and 4V if the
connected output is not a current or frequency output.
Concentration Flow 1
Mass
14 linear Available when concentration
measurement is switched on and
concentration mode 1 does not measure
% volume or % alcohol per volume.
Concentration Flow 1
Volume
15 linear Available when concentration
measurement is switched on and
Concentration mode 1 measures %
volume or % alcohol per volume.
Concentration Flow 2
Mass
16 linear Available when concentration
measurement is switched on and
Concentration 2 is not switched off and
Concentration mode 1 does not measure
% volume or % alcohol per volume.
Concentration Flow 1
Volume
17 linear Available when concentration
measurement is switched on and
Concentration 2 is not switched off and
Concentration mode 2 measures %
volume or % alcohol per volume.
Totaliser 1 Mass 18 Totaliser
Totaliser 1 Volume 19 Totaliser
Totaliser 2 Mass 20 Totaliser
Totaliser 2 Volume 21 Totaliser
Totaliser 3 Mass 22 Totaliser Depends on hardware configuration
Totaliser 3 Volume 23 Totaliser Depends on hardware configuration
HART ® device variable Code Type Explanations
.book Page 140 Monday, August 26, 2013 9:05 AM