Micro Motion RFT9709 Bedienerhandbuch Seite 25

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Seitenansicht 24
Using ProLink
®
Software with Micro Motion
®
Transmitters
11
Getting Started
continued
Wiring to the transmitter
File Menu: Print File Menu: Log Files View Menu: VariablesBefore You Begin Getting Started File Menu: Database
Figure 2-5. RS-485 hard-wiring to transmitters or multidrop networks
Note for Figure 2-5
For long-distance communication, or if noise from an external source interferes
with the signal, install 120-ohm, ½-watt resistors across terminals of both end
devices.
14 15 16 17 18 19 20 P
21 22 23 24 25 26 27 S
19 18 17 16 15 14
26 25 24 23 22 21
Z30D30
CN2
B14
B16
CN2
Receive
Transmit
Power
Low Batt
AC
Adaptor
202 Off 485
202
485
A
B
DCS or PLC
with internal
resistor
R2
R3
R1
(See Note)
4-20 mA
RFT9739
rack-mount
RFT9729
RFT9739
field-mount
IFT9701
IFT9703
RFT9712
Seitenansicht 24
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