777690-01 NI | Alldatasheet

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digital data I/O, control, status, or handshake signals. 100 kΩ resistors that always pull high. Digital connectors for the NI 650x devices are described in Table 2. and C are at xPB7 through xPB0 and xPC7 through xPC0, respectively.

  • 24 or 96 digital input/output lines
  • 5 V TTL/CMOS
  • 2-wire handshaking capability
  • Known power-up states
  • NI-DAQ driver simplifies configuration and measurements Models
  • NI PCI-6503
  • NI DAQCard-DIO-24
  • NI PC-DIO-24
  • NI PCI-DIO-96
  • NI PXI-6508
  • NI PC-DIO-96 Operating Systems
  • Windows 2000/NT/XP
  • Real-time performance with LabVIEW (see page 134)
  • Others such as Linux and Mac OS X (see page 187) Recommended Software
  • LabVIEW
  • LabWindows/CVI
  • Measurement Studio Other Compatible Software
  • Visual Basic
  • C/C++, C# Driver Software (included)
  • NI-DAQ 7 NI 650x Family Bus Digital I/O Lines Device Type Logic Level Isolation Handshaking I/O 8255 Chipset Change Notification Pattern Matching NI 6503 PCI 24 Software timed 5 V TTL/CMOS – ✓ 1 ✓ – ✓ PCMCIA ISA NI 6508 PCI 96 Software timed 5 V TTL/CMOS – ✓ 1 ✓ – ✓ ISA 1Handshaking supplied by the 8255; only one handshaking mode is available.

Table 1. NI 650x Specifications Overview (See page 385 for detailed specifications.) Table 2. NI 650x Connector Overview

Includes NI-DAQ driver software For information on extended warranty and value-added services, see page 20. Recommended Configurations See page 382 for accessory and cable information. BUY ONLINE! Visit ni.com/info and enter pci6503, daqcarddio24, pcdio24, pcdio96, pxi6508, or pcdio96.

Ordering Information

380 National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • info@ni.com • ni.com 24 or 96-Line Digital I/OData Acquisition and Signal Conditioning Digital I/O, 24 or 96 Lines, 5 V TTL/CMOS Family Device Accessory Cable NI 6503 PCI-6503 CB-50LP (777101-01) NB1 (180524-10) DAQCard-DIO-24 CB-50LP (777101-01) PSH27-50F-D1 (776989-01) PC-DIO-24 CB-50LP (777101-01) NB1 (180524-10) NI 6508 PCI-DIO-96 SCB-100 (776990-01) SH100-100-F (185095-02) PXI-6508 SCB-100 (776990-01) SH100-100-F (185095-02) PC-DIO-96 CB-100kit (776455-02) Included in kit Figure 1. NI 650x Hardware Block Diagram devices, write custom programs, and easily perform digital I/O. load on the CPU and bus, and improves the efficiency of the system. other ADEs to quickly get you started with your application.

2 GND

Figure 2. NI 6508 I/O Connector Figure 3. NI 6503 I/O Connector

Digital I/O Connectivity and Signal Conditioning 381National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • info@ni.com • ni.com Digital I/O Connectivity and Signal ConditioningData Acquisition and Signal Conditioning Cables, Connector Blocks, and Signal Conditioning Choose your Digital I/O cables, connector blocks, and signal conditioning in two easy steps. Step 1. Choose your connector block and cable. (see digital I/O accessories section for details) Step 2 (Optional). Choose your signal conditioning hardware and enclosures. Device Connector Block Cables PCI-6527, PXI-6527 CB-100 Kit Kit includes R1005050 cable SCB-100 SH100-100-F CA-1000, CB-50, CB-50LP R1005050 (splits into two 50-pin connectors); with this cable, you can use two accessories from this group with one NI 6527 device PCI-6503, PC-DIO-24 CA-1000, CB-50, CB-50LP SH50-50 or NB1 DAQCard-DIO-24 CA-1000, CB-50, CB-50LP PSH27-50F-D PCI-DIO-96, PXI-6508 CB-100 Kit Kit includes R1005050 cable SCB-100 SH100-100-F CA-1000, CB-50, CB-50LP NB5 (Splits into two 50-pin connectors); with this cable, you can use two accessories from this group with each device. PC-DIO-96 CB-100 Kit Kit includes NB5 cable SCB-100 SH100-100-F CA-1000, CB-50, CB-50LP NB5 (Splits into two 50-pin connectors); with this cable, you can use two accessories from this group with each device. SCXI Signal Conditioning SSR Series SC-206x Device ER-8, ER-16 CA-1000 Custom Device System (Page 270 ) Modules (Page 349 ) (Page 349) Electromechanical Relays (Page 349 ) Connectivity Enclosure (Page 351)

electromechanical relays, digital data buses, and more. operation in the LabVIEW Real-Time environment. of built-in channel-to-channel isolation between each I/O channel. hardware-timed NI 653x devices on page 432. 1Handshaking supplied by the 8255; only one handshaking mode is available. See page 376 for details. Table 1. Digital I/O Products Specifications Summary (See page 385 for detailed specifications.) pages for more information. See page 376 for details. Table 2. Digital I/O Applications. Table 3. Digital I/O Signal Conditioning Accessories.

376 National Instruments • Tel: (800) 433-3488 • Fax: (512) 683-9300 • info@ni.com • ni.com Digital I/O OverviewData Acquisition and Signal Conditioning Digital I/O Overview Hardware-Timed Digital I/O Hardware-timed digital I/O, also referred to as high-speed digital I/O, implies that the writing and reading of digital lines is controlled by an external or internally generated clock signal. The clock signal latches the digital data into or out of a buffer, which can be streamed at high speed to the computer. With hardware-timed digital I/O, software commands are similar to buffered data acquisition command and an array of data is passed with each read or write operation. NI 653x devices can be used in either a hardware-timed or a software-timed manner. For more information on NI 653x devices see page 432. Handshaking Digital I/O Handshaking digital I/O refers to transfers of digital data between the digital I/O device and a peripheral. Both parties in the transfer control a handshaking line and can pause the operation if they are unable to keep up with the data rate. NI 650x devices offer

8255 Mode 2 bidirectional transfers at typical constant sustainable

rates of 1 to 10 kbytes/s using a 233 MHz Pentium computer. For more information on high-speed handshaking, see the NI 653x devices on page 432. Power-Up States Some applications require that the digital I/O device power up with a determined value on the data lines. This procedure ensures that equipment connected to the digital I/O device is not damaged during the time after power is applied and before the software application begins running. All NI digital I/O devices power up with a known state on the digital I/O lines, either logic high, logic low, or high impedance. NI 6527 devices offer software programmable power-up states on each line that can be configured using a software utility located in the Developer Zone. For more information, visit ni.com/info and enter ex95u3. Change Notification and Pattern Matching To monitor digital lines without continuously polling their state, you can use Change Notification on NI 6527 devices to notify your application when one or more digital input lines changes from low to high, high to low, or both. Y ou can configure NI 650x devices to provide pattern matching when the input lines on a port match a specific pattern. In a PXI LabVIEW Real-Time application, change notification and pattern matching can be used to deterministically trigger execution for high-reliability real-time event response. NI offers a complete array of digital I/O products for connection to any digital data bus or device.