Multi-Drop Connection (2-Wire Connection); Hart® Device Variables - Ametek DR6500 Handbook

DESCRIPTION OF HART INTERFACE
9

9.3.2 Multi-Drop connection (2-wire connection)

Up to 63 devices may be installed in parallel (this signal converter and other HART® devices).
For an illustration of multi-drop networks, refer to
For data on communication in multi-drop mode, refer to
96.
9.4 HART® device variables
HART® device variable
sensor value
level
distance
reflection
level linearization
volume conversion
mass conversion
distance linearization
ullage volume conversion
ullage mass conversion
1 This HART® device variable is available if you created a linearization table in the conversion menu
2 This HART® device variable is available if you created a strapping table in the conversion menu
The HART® dynamic variables PV (Primary Variable), SV (Secondary Variable), TV (Third Variable)
and QV (Fourth Variable) can be assigned to any of the device variables.
The HART® dynamic variable PV is always connected to the HART® current output which is, for
example, assigned to level measurement.
138
Code
0
1
2
3
4
1
5
2
6
2
7
1
8
2
9
2
www.drexelbrook.com
Multi-drop networks
HART ® network configuration on page
Type
linear
linear
linear
linear
linear
linear
linear
linear
linear
linear
DR6500
on page 47.
DR6500-PM-English-Issue 1