B&B Electronics RS-232 Digital Relay I/O 232DRIO - Manual (Page 5)

232DRIO-0308 Manual 3
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104
Chapter 1- Introduction
232DRIO Features
The 232DRIO is a general purpose data acquistion controller that
is connected to your computer’s RS-232 serial port. The 232DRIO
offers 1 opto-isolated input and 2 relay outputs. With these features,
the controller can be used to sense external ON/OFF conditions and
to control a variety of devices.
The relay outputs are CMOS/TTL compatible. The optically
isolated AC/DC input are also CMOS/TTL compatible. For
maximum flexibility, both input and outputs are connected with
internal screw type terminal blocks. Three LEDs are provided to
monitor the status of each of these.
The 232DRIO connects to your computer’s RS-232 serial port
through a DB-9F connector. The unit communicates at a baud rate
of 9600, 8 data bits, no parity, and 1 stop bit. This unit can not be
powered through the handshake lines because of the higher current
requirement to drive the relays. However, the unit may be powered
by an external +12Vdc source brought in through the power pin, pin
#9 of the serial port. If the 232DRIO cannot be powered using the
previous method, it may be powered with +12Vdc @ 100mA through
the supplied terminal blocks. Power supply is available.