Endress+Hauser Levelflex M FMP45 - 12 Appendix; Function and System Design

Appendix Levelflex M FMP40 and FMP45
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12 Appendix
12.1 Function and system design
12.1.1 Equipment architecture
Stand-alone
• Power supply unit (2-wire).
• Operation only by FieldCare via Commubox FXA191.
L00-FMP4xxxx-14-00-06-en-022
If the HART communication resistor is not installed in the supply device and HART protocol
communication is to be carried out, it is necessary to insert a ≥ 250 Ω communication resistor into
the 2-wire line.
12.1.2 Patents
This product may be protected by at least one of the following patents.
Further patents are pending.
• US 5,661,251 i EP 0 780 664
• US 5,827,985 i EP 0 780 664
• US 5,884,231 i EP 0 780 665
• US 5,973,637 i EP 0 928 974
ENDRESS + HAUSER
E
+–
%
ENDRESS + HAUSER
RMA 422
- FieldCare
FXA191
or
DXR375
transmitter power
supply unit
RMA422
or RN221N
(communication resistor
included)
PLC
Commubox
FXA 191
operating and
display module
VU331