The National Instruments PCI-6515 is a versatile digital input/output device featuring 32 digital input channels and 32 digital output channels, making it suitable for a range of applications in industrial control, manufacturing testing, and data acquisition. Available under part numbers 778835-01 and 778938-01 (which refers to the complete PCI-6515 bundle kit), this cost-effective device is designed with advanced features tailored for robust performance. Upon initial power-up, all output drives are disabled, allowing all output lines to be configured by the user to a predetermined on or off state, ensuring that the device powers up in a known configuration. Users can easily program these states using the NI Measurement & Automation Explorer tool. The PCI-6515 can be configured to generate an interrupt when a change is detected on any of the digital input lines, and it supports monitoring for rising edges, falling edges, or both, enabling effective event-driven control. With a voltage range of -30 V to 30 V, this device provides flexibility in various environments. While it generates a change notification for any detected transition, the identification of specific lines that changed is not reported, so users must read the input lines to ascertain current states after a transition. The PCI-6515 is designed for efficiency, with change detection rates influenced by the system's software response time. The device weighs 6.1 ounces and measures 6.3 x 3.9 inches, acceptable for standard PCI connectivity. It operates effectively within a temperature range of 0 °C to 55 °C and a storage range of -20 °C to 70 °C, with humidity tolerance levels of 10% to 90% (operating) and 5% to 95% (storage), ensuring reliable performance in diverse environments. A comprehensive user manual and maintenance manual are available for download, and interested clients are encouraged to contact a sales representative for pricing and additional information.