B&B Electronics 232OPDRI-PH - Quick Start Guide - Manual

Loopback Test Connect Your RS-232 Devices
Front View
Serial
Ports
• Use a DB9 Female to DB9 Male cable to connect
a PC to the DCE port. (Recommended)
• Connect a DB9 Female to DB9 Female cable
to the DTE port. On the DTE Port, jumper pin
2 to 3 and pin 7 to 8 on the female end
of the cable. This loops TD to RD and CTS to RTS.
• Using HyperTerminal or similar program, connect
to the appropriate COM port. (Remember to set
the baud rate to 9600.)
• Turn off HyperTerminal local echo.
• Type some characters in HyperTerminal. The
same characters should appear on your screen.
The LED indictors will light up to show you that
data is being transmitted.
Check LEDs
Product Overview
10 to 48 VDC, 1.5 W Max
Grounding the unit is recommended.
A DTE device is “Data Terminal Equipment.” This
includes computers, PLCs, and most devices that are
not used to extend communications.
(Think “COMPUTER” for DTE.)
A DCE device is “Data Communications
Equipment.” This includes modems and other
devices that extend communications, like RS-422,
RS-485, fiber optic converters or radio modems.
(Think “MODEM” for DCE.)
When connecting a DTE device to a DCE device,
use a straight through connection. When connecting
a DTE device to a DTE device, or a DCE device to a
DCE device, use a crossover (null) connection.
Back View
LED
Indicators
LED
Indicators
DB9 Female DCE Port
DB9 Male DTE Port
Pin 3 LED
Green, ON when a TD input (PIN 3)
is raised on the DCE port
Pin 7 LED
Green, ON when a RTS input (PIN 7)
is raised on the DCE port
Pin 2 LED
Green, ON when a RD input (PIN 2)
is raised on the DTE port
Pin 8 LED
Green, ON when a CTS input (PIN 8)
is raised on the DTE port
Power LED Red, ON when power applied
Power TB2 Position, Removable (10-48 VDC)
GND Grounding Lug
1 2 3