Installation
FLOWSIC600-XT · Operating Instructions · 8018846/1BHP/V2-1/2021-05 · © SICK Engineering GmbH 77
Subject to change without notice
3.4.10 Connecting external pressure and temperature sensors to the electronics
It is possible to connect external pressure and temperature transmitters via HART to the
electronics of the FLOWSIC600-XT. Select the electronics version with the option “HART p/T
modules” in this case. This is available in all three Ex versions (Ex i, Ex d, Ex e) (Table 3
“Available input/output configurations” p. 52).
When the transmitters of the HART masters are connected, the FLOWSIC600-XT
electronics polls the connected HART transmitters for pressure and temperature cyclically
when the parameters are set accordingly (Register #4430 “UART3_Protocol” --> “HART-
PT”). The cycle times can be set between 2 and 60 seconds in Register #4700 “PT_Update-
Cycle”. Both cycle times are updated within this cycle.
The interface parameters are automatically set to the values 1200 Baud, 8O1.
The pressure transmitter address must be stored in Register #4750
“Pressure_HART_Addr” and the temperature transmitter address in Register # 4751
“Temperature_HART_Addr”.
To use the read-in values, for example, in a volume converter, the raw values for pressure
are available in Register #4723 “Pressure_Raw” and for temperature in Register #4728
“Temperature_Raw”. The transmitter statuses are available in Registers #4727
“Pressure_Status” (for pressure) and #4732 “Temperature_Status” (for temperature).
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