Description
The National Instruments PCI-6509 Digital I/O Device, with part numbers 778792-01, 778936-01, 189700E-01L, and 189700C-01, is designed to effectively drive external digital devices, including Solid-State Relays (SSR). This versatile device allows each port to be individually configured for input or output operations without the need for an external power supply for the outputs.
Users can ensure safe operation by configuring initial output states through the software, leveraging programmable power states. In the event of a PC or application failure, the PCI-6509 employs advanced I/O watchdogs that transition the device to a secure output state, enhancing system safety. To further stabilize digital inputs, programmable input filters are available to eliminate rebounds and spikes.
The device facilitates easy and reliable connections through a 100-pin female 0.050 series SCSI I/O connector. Additionally, users can predetermine the power-up states of the PCI-6509, setting it to power up as an input, high output, or low output, depending on the application’s requirements. Change detection is another sophisticated feature, allowing the device to send interrupts when any input line changes state, with the capability to monitor rising edges, falling edges, or both.
The rate at which the PCI-6509 detects input changes is contingent upon the software’s reaction time, which may vary across different systems. This dependency ensures that the device can adapt to a wide range of software environments and applications.
| Property | Description |
|---|---|
| Manufacturer | National Instruments |
| Part Number | 778792-01, 778936-01, 189700E-01L, 189700C-01 |
| Device Type | PCI-6509 Digital I/O Device |
| Output Drive Capability | Can drive external digital devices such as Solid-State Relays (SSR) |
| Port Configuration | Each port can be configured for input or output; no external power supply required for outputs |
| Programmable Power States | Initial output states can be configured in software for safe operations |
| I/O Watchdogs | Advanced I/O watchdogs to go to a secure output state in case of PC or application failure |
| Input Filters | Programmable input filters to eliminate rebounds/spikes |
| Connector Type | 100-pin female 0.050 series SCSI I/O connector |
| Programmable Power-up States | Programmable to power up in a predefined state: input, high output, or low output |
| Change Detection | Programmable to send interrupts on change in any input line; can monitor for rising edges, falling edges, or both |
| Change Detection Rate | Dependent on software reaction time, varies from system to system |
Question 1: How does the National Instruments PCI-6509 Digital I/O Device protect against system failures and ensure safe operation?
Answer 1: The National Instruments PCI-6509 Digital I/O Device ensures safe operation and protection against system failures by using programmable power states to configure initial output states, employing advanced I/O watchdogs that transition the device to a secure output state in the event of a PC or application failure, and by offering programmable input filters to stabilize digital inputs and eliminate noise such as rebounds and spikes.
Question 2: Considering the features of the National Instruments PCI-6509 Digital I/O Device, how does its ability to preconfigure power-up states and utilize I/O watchdogs enhance system safety and reliability?
Answer 2: The National Instruments PCI-6509 Digital I/O Device enhances system safety and ensures reliable operation with external digital devices such as Solid-State Relays through its ability to configure initial output states via software, employ advanced I/O watchdogs for secure output state transition in case of PC or application failure, offer programmable input filters to manage signal integrity, and support change detection for monitoring input line state changes.
Question 3: What features of the National Instruments PCI-6509 Digital I/O Device contribute to system safety and ensure reliable operation with external digital devices such as Solid-State Relays?
Answer 3: The National Instruments PCI-6509 Digital I/O Device enhances system safety and reliability by allowing users to preconfigure power-up states to ensure that the device initializes in a known, safe state, and by utilizing I/O watchdogs that automatically transition the device to a secure output state in the event of a PC or application failure, thereby preventing unexpected behavior that could lead to system damage or accidents.
Question 4: How does the National Instruments PCI-6509 Digital I/O Device ensure the safety of system operations in the event of a PC or application failure?
Answer 4: The National Instruments PCI-6509 Digital I/O Device enhances system safety and ensures reliable operation through its programmable power states that allow configuration of initial output states, advanced I/O watchdogs that secure output states in the event of a PC or application failure, and programmable input filters to eliminate signal noise such as rebounds and spikes.
Question 5: What are the features of the National Instruments PCI-6509 Digital I/O Device that enhance system safety and ensure reliable operation?
Answer 5: In the event of a PC or application failure, the National Instruments PCI-6509 Digital I/O Device ensures the safety of system operations by using advanced I/O watchdogs that transition the device to a secure output state to prevent unintended operations.
