The USB-2255-64 is USB 2.0 I/O devices with 32 digital inputs and 32 digital outputs. All digital inputs can operate as 32-bit counters and support selectable sink or source configurations via wires. The models also have LED indicators to display the status of the digital channels.

A dual watchdog function with configurable power-on and safe values ensures reliable operation in harsh environments.

We also provide API library and demos with source code for Windows and Linux users to develop their own USB applications with various development tools (VB/C++/C#.NET/VB.NET/LabVIEW). Therefore, the USB-2255-64 is the perfect choose for you to implement I/O expansion via a plug-and-play USB interface.
 

Note：The USB 2.0 port provides only 500mA, external power is required when multiple modules are connected to the same USB port. Please refer to the following figure shown daisy chain application.
 

The USB-2200 modules support two power inputs for enhanced redundancy with a voltage range of +10 to +30 VDC. For modules connected to two power input sources, if one source is inactive or interrupted, the other power source is capable of taking over immediately. The USB-2200 modules can operate as normal with only a single power source. (If not using the USB hub function, the module can be powered via a USB 2.0 port.)