KROHNE IFC 300 Converter EN - Manual (Page 169)

DESCRIPTION OF HART INTERFACE
9
169
IFC 300
www.krohne.com 08/2010 - 4000069803 - MA IFC 300 R04 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 which is, for
example, assigned to the volume flow.
A totalizer 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 totalizer device variables can be assigned.
The totalizer 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.
9.5 Parameter for the basic configuration
There are parameters, such as counter 1…2 (optional 3) and a selection of the diagnosis values,
that require a warm start for the device following data changes in order to update, for example,
dependent unit parameters before other parameters may be written.
Depending on the characteristic of the HART ® host system, e.g. online/offline mode, these
parameters are treated differently. See the following section for more detailed information.