POC-200 Series User’s Manual
Copyright © 2014 Neousys Technology Inc. All Right Reserved. Page 27 of 78
COM1/COM3 COM2/COM4
Pin# RS-232 Mode RS-422 Mode
RS-485 Mode
(Two-wire 485)
RS-232 Mode
1
DCD DCD
2
RX 422 TXD+ 485 TXD+/RXD+
RX
3
TX 422 RXD+ TX
4
DTR 422 RXD- DTR
5
GND GND GND GND
6
DSR DSR
7
RTS RTS
8
CTS 422 TXD- 485 TXD-/RXD- CTS
9
RI RI
2.3.5 2-Pin Terminal Block for DC Input
POC-200 series features a pluggable terminal block for direct DC wiring. The 2-pin
pluggable terminal block on the back panel is fit for field usage where DC power is usually
provided. It accepts a wide range of DC power input from 8 to 35V. And the screw clamping
connection of terminal block gives a very reliable way for wiring the DC power. The
following table describes the pin definition of the pluggable terminal block. For detail
information of connecting DC power, please refer to section 3.6.
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