Yokogawa ADMAG AXF - Manual (Page 39)

IM 1E10C1-E 6-1
6. OPERATION VIA BRAIN TERMINAL
6. OPERATION VIA BRAIN TERMINAL
(BT200)
Products come equipped with a BRAIN communication function communicate with
dedicated BRAIN terminals (BT200) or computer system. In the BRAIN Series commu-
nications system, modulated signal is superimposed onto the 4 to 20 mA DC analog
signal for data transmission. Since the modulated wave is an AC signal superimposed on
the analog signal will cause no error in the DC component of the analog signal. In this
way, monitoring can be performed via communications while the ADMAG SE is online.
This section describes the operation procedures using BRAIN terminal. For details on
the functions of the ADMAG SE, see Chapter 5, “Function and Data Settings.” And
also, see the “BT200 Instruction Manual” (IM 1C0A11-01E) for more detailed
information.
6.1 BT200 Connections
(1) Connecting BT200 to 4 to 20 mA DC Transfer Line
The communication signal of the ADMAG SE with BRAIN communication function is
superimposed onto the 4 to 20 mA DC analog signal to be transferred.
Intermediate
terminals
CUR–
CUR+
4 to 20mA DC signal
transfer line
Terminal board
Control room
Receiver
Receiver resistance,
250
Ω
to 600
Ω
BT200 BT200 BT200
ADMAG SE
Figure 6.1 Interconnection Diagram