FP-DIO-550

National Instruments FP-DIO-550 16-Channel Digital I/O Module
Features

• 8 Sourcing Outputs
• 8 Sinking / Sourcing Inputs
• 7 mA Current-Limited Input Protection
• -40 to 70 ° C Operating Range
• Output Short-Circuit Protection

The National Instruments FP-DIO-550 16-Channel Digital I/O Module has eight current-limited input channels with optical isolators. Each channel has two input terminals, IN+ and IN–. When the voltage across the IN+ and IN– terminals is at least 11 V, signal current flows through the input and turns on the optical isolator, and the channel is ON. The current-limiting circuitry limits the amount of current flow to 7 mA.