LineEye LE Series User Manual

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Monitor RS-422 between Device A and Device B
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We recommend connecting “TXD+” to “TXD-” and “RXD+” to “RXD-”
using twisted pair cables.
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If your target devices have “TXDA” and “TXDB”, conrm which one is the
positive and the negative.
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Connect the signal ground of target device and GND of line monitor certainly.
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Simulate data from line monitor to RS-422 Device.
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Connect the terminal control of 100Ω-120Ω in between RXD+ and RXD-.
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Monitor or Simulate RS-485
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Line monitor is connected as one of RS-485 nodes when measuring half-
duplex RS-485.
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If the line monitor is the terminal device, connect the terminal control (100Ω-
120Ω) in between TXD+ and TXD-.
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The send and receive data of RS-485 is displayed in the TSD line of line
monitor.
Device A Device B LE-110SA
TXD+
TXD-
TXD+
TXD-
TXD+
TXD-
RXD+
RXD-
RXD+
RXD-
RXD+
RXD-
SG SG
GND
Device LE-110SA
TXD+
TXD-
TXD+
TXD-
RXD+
RXD-
RXD+
RXD-
SG
GND
Terminal
control
Device A Device B LE-110SA
TX/R
X+
TX/RX-
SG
SG SG
Device C
GND
TX/RX+
TX/RX-
TX/RX+
TX/RX-
TXD+
TXD-

LineEye LE Series Specifications

General

Brand	LineEye
Model	LE Series
Category	Measuring Instruments
Language	English