Humandata LNX-003, User Manual

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LNX-003(Ver.1.0)
4.6. RS-485 (2-wire)
Item Specification Remarks
Comm. System Half-duplex communication
Baud Rate
300, 600, 1200, 2400, 4800,
9600, 19200, 38400, 57600,
115200, 230400 bps
Number of Connectable
Terminals
128 Typical example
Termination Resistor 120 Ω
Configurable by setting
switch (SW1) ON/OFF
Transmit-Receive
Switching
Automatically controlled
Echo Cancellation
Available by setting switch
(SW2)
RS-485 mode can communicate with multiple terminals by using a twist pair cable.
5. Interface Terminal
Terminal block is detachable. Do not remove it while the power is supplied.
Pin Number Signal Signal and Polarity
1 A RD+
2 B RD-
3 GND GND
4 Y SD+
5 Z SD-
The GND(Ground) pin is recommended to be wired.