4.7 Connecting HART Communicator
The following connection versions are available to the user:
• Direct connection to the Promag transmitter via Terminals 26/27
• Connection via the analogue 4...20 mA cable of the current output
Note!
The measuring loop must have a minimum resistance of 250 Ω.
4.8 Connecting Commubox FXA 191 (Commuwin II software)
The following connection versions are available to the user:
• Direct connection to the Promag transmitter via Terminals 26/27
• Connection via the analogue 4...20 mA cable of the current output
Note!
• The measuring loop must have a minimum resistance of 250 Ω.
• Move the DIP switch on the Commubox to ‘HART’.
• Set the function “CURRENT SPAN” to ‘4–20 mA’ (see page 51) and the function
“PROTOCOL” to ‘HART’ (see page 69).
• When connecting up, also take into account the information given in the
documentation issued by the HART Communication Foundation.
This applies especially to HCF LIT 20: “HART, a technical summary”.
Note!
Note!
I
O
27
_
26
+
ba009y73
Power supply
HART handheld
terminal
Other instruments or
PCL with passive input
Screening
≥ 250 Ω
Fig. 34
Electrical connection
HART communicator
_
27
26
+
Screening
Other instruments or
PCL with passive input
PC with E+H software
“Commuwin II” and HART-DDE server
RS 232C
Commubox
FXA 191
ba009y74
≥ 250 Ω
Power supply
Fig. 35
Electrical connection
Commubox FXA 191
Promag 33 4 Electrical Connection
Endress+Hauser 33
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