|
USB-based
Digital I/O System
The SWITCH
& SENSE 8 provides eight isolated AC or DC inputs and eight
electromechanical relays in a single USB compatible system. With no
switches or jumpers on the board, the Switch & Sense 8 is completely
plug-and-play.
Housed in a rugged
steel case, the unit is simple to install and allows users to easily
add digital I/O abilities to any USB equipped personal computer. Screw
terminals provide easy field wiring to all inputs and outputs.
The inputs monitor
24 VAC or VDC inputs while the output relays provide 6 Amp (Form C,
SPDT) outputs at 120 VAC or 28 VDC. All board addresses, interrupt
channels etc. are set by the computeręs USB plug-and-play software.
SWITCH & SENSE
8 software provides all of the components necessary to configure,
test, and control the device. Its interface library provides a set
of functions that can be called from Visual Basic or Visual C/C++.
In addition to the library files, there are several application examples
that demonstrate how to use the interface library. A software enabled
input filter is available on all channels. A schematic diagram of
one of the input channels is shown below.
SWITCH & SENSE
8 costs $299.
Measurement
Computing
(508) 946-5100
Fax: (508) 946-9500
www.measurementcomputing.com
02-01
Circuit Cellar provides up-to-date information
for engineers. Visit www.circuitcellar.com
for more information and additional articles.
For subscription information, call (860) 875-2199, subscribe@circuitcellar.com
or subscribe
online. ęCircuit Cellar, the Magazine for Computer Applications.
Posted with permission.
|