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Yokogawa ADMAG CA User Manual

Page 52

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IM 1E8B0-01E

7-2

7. OPERATION VIA BRAIN TERMINAL

(2) Connecting the BT200 to a 4 to 20 mA DC Transfer Line

The communication signal of the ADMAG CA with the / BR function (optional specifi-
cation) is superimposed onto the 4 to 20 mA DC analog signal to be transferred.

Receiver resistance,
250

to 600

Intermediate

terminals

4 to 20 mA DC signal

transmission line

Control room

Terminal board

Receiving instrument

Figure 7.2 Communicating via a 4 to 20 mA DC Signal Line