Description

The PCI-7296: 96-bit Digital I/O board is a high density parallel Digial I/O board for PCI computer in industrial applications. All 96 digital I/O channels can sink 24 mA for power control application.

This board provides 4 chips tha teach emulate an industry standard 8255 Programmable Peripheral Interface (PPI). Each PPI offers 3 ports; PA, PB, and PC. PC is subdivided into 2 nibble-wide (4-bit) ports. Each channel has an individual connector with OPTO-22 pin assignment. It is very essential to use isolated input to prevent the grond loop problems.

The PCI-7296 uses SAIC PCI controller to interface the board to the PCI bus. The ASIC fully implement the PCI local bus specification Rev 2.0. All bus relative configuration, such as base memory address and interrupt assignment, are automatically controlled by software. It does not need any user interaction and pre-study for configuration. This removes the burden of searching for a conflict-free configuation, which can be very time consuming and difficult with some other bus standards.

PCI-7296 has a programmable timer counter for generating periodic interrupts to the host processor. The timer/counter chipset is 82C54, which includes 3 16-bit counter,at 2 MHz clock input. One counter is used as an event counter for counting events coming from input channels. The remaining two counters are cascaded together making a 32-bit timer, which can control the rate of interrupt generation.

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Features

• Compact size (suitable for any size of chassis)
• 32-bit PCI-bus, Plug and Play
• 96 TTL/DTL compatible digital I/O lines
• Emulates four industry standard 8255 PPI mode 0
• Buffered circuits for higher driving capacity
• Direct interface with OPTO-22 compatible I/O modules
• Programmable interrupt handling
• Output status readback

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Specifications

• Bus : 32-bit PCI
• Bus interface : slave
• Transfer rate :
  700 KB/sec typical
  150 KB/sec max
  
• Channels : 96
• Compatibility : TTL/DTL
• Reference voltage : +5 V
• Data transfer : interrupt, programmed I/O
• Input voltage :
  Logic High Voltage : 2.0 ~ 5.25 V
  Logic Low Voltage : 0.0 ~ 0.80 V
  Logic High Current : 22.0 µA
  Logic Low Current : -0.2 mA
• Output signal Port A, B :
  Logic High Voltage : 2.4 V minimum
  Logic Low Voltage : 0.5 V maximum
  Logic High Current : -2.6 mA
  Logic Low Current : 24.0 mA
• Output signal Port C :
  Logic High Voltage : 2.4 V minimum
  Logic Low Voltage : 0.4 V maximum
  Logic High Current : -15.0 mA
  Logic Low Current : 24.0 mA

Physical, Environmental

• Connector : 50-pin male ribbon cable connector
• Operating temperature : 0°C ~ 60°C
• Storage temperature : -20°C ~ 80°C
• Humidity : 5 ~ 95%, non-condensing
• Power consumption :
  +5V @ 850 mA, typical
  +5V @ 1A, max
• Dimensions : half- size, only 111 (H) x 183 (L) mm

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Ordering Information

PCI-7296 : 96-bit Parallel Digtial I/O Card

TB-24R : 24-bit Relay Output Board

TB-24P : 24-bit Isolated Digital Input Board

TB-18P8R : 16 Isolated Digital Input and 8 Relay Output Board

TB-24P : General Purpose Wiring Board

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