KROHNE OPTISONIC 7300 EN - Manual (Page 110)

9
DESCRIPTION OF HART INTERFACE
110
OPTISONIC 7300
www.krohne.com 09/2012 - 4001102303 - MA OPTISONIC 7300 R03 en
9.3.1 Point-to-Point connection - analogue / digital mode
Point-to-Point connection between the signal converter and the HART ® Master.
The current output of the device may be active or passive.
1 Primary master
2 FSK modem or HART
® modem
3 HART ® signal
4 Analog indication
5 Signal converter terminals A (C)
6 Signal converter terminals A- (C-)
7 Signal converter with address = 0 and passive or active current output
8 Secondary Master
9 Power supply for devices (slaves) with passive current output
10 Load ≥ 250 Ω (Ohm)