NI PCI-6515 Low-Cost Industrial Digital I/O Module

The NI PCI-6515 is a PCI-based industrial digital I/O module delivering 64 total digital channels—32 inputs and 32 outputs—for machine control, automated testing, and industrial automation systems. Operating across –30 V to +30 V DC with 24 V logic thresholds, the module provides bank isolation, programmable input filters for glitch elimination, edge detection on rising or falling transitions, and configurable watchdog timers for safe fault-state operation. Each digital channel drives up to 125 mA, with per-bank output capacity of 500 mA at 100% duty cycle. Programmable power-up states and interrupt-driven edge detection enable precise industrial signal management.

– Technical Specifications

• Digital I/O Channels: 32 inputs (sink/source), 32 outputs (sink); 64 total
• Voltage Range: –30 V to +30 V DC
• Logic Thresholds: 24 V
• Channel Current Drive: 125 mA per line
• Maximum Bank Output Current: 500 mA (100% duty cycle)
• I/O Connector: 100-pin keyed female SCSI type
• Dimensions: 14.1 cm × 11.4 cm (5.55 in. × 4.49 in.)
• Weight: 6.1 oz (173 g)
• Operating Temperature: 0 °C to 55 °C
• Storage Temperature: –20 °C to 70 °C
• Operating Humidity: 10% to 90% RH (non-condensing)

– Key Features

• Bank isolation for independent channel groups
• Programmable input filters for debouncing and spike rejection
• Rising-edge, falling-edge, or dual-edge monitoring with overflow detection
• Configurable watchdog timers for safe output state control during faults
• Programmable power-up state configuration
• Interrupt generation on input line changes

– Typical Applications

• Machine control and equipment automation
• Automated test and measurement systems
• Industrial process monitoring and signaling
• Safety-critical switching and fault-response circuits

– Compatibility & Integration

NI-DAQmx driver support enables programming in LabVIEW, Visual C#, Visual Studio.NET, Measurement Studio, LabWindows/CVI, ANSI C/C++, Python, and MATLAB. Connection uses shielded or 100-pin ribbon cabling with the SCB-100A connector block and SH100-100-Flex cable assembly.