The ADU200 USB
Relay I/O Interface allows control of 4 relay contact outputs, 4 contact or TTL
inputs, and 4 event counters via a USB port. The ADU200 can effectively
convert a standard PC to a powerful PLC (programmable logic
controller). High quality PA-Series relays from Aromat offer superior
performance. This low-cost serial relay contact interface is easy to use
with VB, and Visual C++ via standard HID drivers included with Windows
98,2000,XP, Vista. A mini-driver (DLL)* is also provided allowing control using
standard ASCII commands using familiar readfile , writefile commands. The ADU200
USB interface also features an auxillary RS-232 port for connecting Legacy
RS-232 devices. (ADR Products) The ADU200 includes a 10' USB cable and is
available as a PCB or in an enclosure with several mounting options.