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Instruction Manual
IM-106-910Xi, Original Issue
November 2010
4-11
Xi Advanced Electronics
Field Communicator
Menu Trees
Connect the 375/475 Field Communicator in the Xi (Xi-to-DCS) 4-20 mA
signal loop or to the Xi terminals as shown in Figure 4-3 and refer to
Figure 4-4 for the 375/475 Field Communicator Xi menu tree.
OFF-LINE AND ON-LINE
OPERATIONS
The 375/475 Field Communicator can be operated both off-line and on-line.
Off-line operations are those in which the communicator is not connected to
the O
2
Probe. Off-line operations can include interfacing the 375/475 Field
Communicator with a PC (refer to applicable HART documentation regarding
HART/PC applications.)
In the on-line mode, the 375/475 Field Communicator is connected to the
4-20 mA analog output signal line. The communicator is connected in parallel
to the O
2
Probe or in parallel to the 250 ohm load resistor.