Owner's manual

5 OPERATION
26
TT 51 SERIES
www.krohne.com 09/2010 - 4000754201 - MA TT 51 R01 en
5.1.2 Multi-drop connection (2-wire connection)
As a multipoint connection (Multidrop) with up to 64 devices in parallel (this transmitter or other
HART
®
devices).
The current outputs of the devices must be passive!
Burst mode is not supported.
1 Primary master
2 HART
®
modem
3 HART
®
signal
4 Other HART
®
devices or this transmitter (refer also to 7)
5 Terminal 7
6 Terminal 6
7 Device with address > 0 and passive current output, connection of max. 64 devices (slaves)
8 Secondary Master
9 Power supply for devices (slaves) with passive current output
10 Load ≥ 250 Ω (Ohm)