5
OPERATION
24
OPTITEMP TT 53 C/R
www.krohne.com
06/2018 - 4006523501 - MA OPTITEMP TT 53 R01 en
5.2 HART
®
networks
5.3 Point-to-point connection analog / digital mode
Point-to-point connection between the transmitter and the HART
®
master.
The current output of the device may be active or passive.
INFORMATION!
In order to ensure reliable HART
®
communication with this transmitter, the loop resistance
must be at least 250
Ω
! If the USB interface (configuration modem) is connected to the
transmitter then the HART
®
communication is disconnected.
1
Primary Master
2
HART
®
modem
3
HART
®
signal
4
Analog indicator
5
Terminal 7
6
Terminal 6
7
Device 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)
