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Mode of operation and system
4
4.1
Wireless HART network
Task of the WirelessHART adapter in the WirelessHART network
The WirelessHART adapter is a smart wireless module. The adapter connects up to four
connected field devices over a wireless link to a WirelessHART network via each 4 to 20 mA or
HART interface.
The WirelessHART adapter sends the measurement and diagnostics information of the field
device in the form of wireless signals to the WirelessHART gateway. The gateway, for example
a Siemens IE/WSN-PA Link, receives the information and makes it available in the plant
network.
IE/WSN-PA LINK
SIMATIC system
SITRANS AW200
SIMATIC ET 200 with
HART support
SITRANS TF280
SITRANS P280
DP/PA LINK
Industrial Ethernet
PR
OFIBUS
WirelessHART
PROFIBUS PA
ES
OS
MS
Figure 4-1
Wireless HART network
Due to technical conditions, it is often impossible to transfer diagnostics data from HART field
devices to a higher-level process control system.
The WirelessHART adapter is capable of sending diagnostics data to a diagnostics station. The
data can be evaluated centrally on the diagnostics station with the SIMATIC PD and
SITRANS MD software tools. This has no detrimental effect on the process control system.
WirelessHART Adapter SITRANS AW200
Operating Instructions, 02/2020, A5E02777161-AA
17