Endress+Hauser iTEMP HART TMT112 Bref Mode D'emploi page 15

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Connection HART communication
Device configurator SFX100, hand operating module DXR375 or Commubox
FXA191 or FXA195 in combination with PC and Endress+Hauser operating
software (See "Operation" on page 16.).
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A = Connection HART
A* = Connection HART
C = The measurement circuit must have a load of at least 250 Ω. If using the
B = PLC with passive input
Endress+Hauser power supplies RNS221 and RN221N this resistance is
already installed in the unit and is therefore not required externally!
communication directly to the transmitter
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communication to a power supply
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