24-bit Digital I/O Card   

The PCL-724's 24 bits of DI/O are divided into three 8-bit ports (A, B and C). You can configure each of these ports individually by software for either input or output. The card can directly control SSR carrier modules through a 50-pin Opto-22 compatible connector.

The PCL-724 is a low-cost alternative to the PCL-722 for applications that require up to 24 I/O channels. Like the PCL-722 it provides a readback feature which lets you monitor the status of the output by reading back the output port directly.

Applications

• Digital I/O control
• Industrial monitoring and control
• Interfacing with parallel I/O devices
• Interfacing with Opto-22 compatible I/O module racks

Features

• 24 digital I/O lines
• Emulates 8255 PPI mode 0
• Buffered circuits for higher driving capacity than the 8255
• Interrupt handling
• Output status readback
• Pin-compatible with Opto-22 I/O module racks

Specifications

• I/O lines: 24 (8 bits x 3 ports)
• Programming mode: 8255 PPI mode 0
• Interrupt: Bit 0 of port C can generate an interrupt to IRQ2, 3,4,5,6 or 7
• Interrupt triggering: Rising or falling edge triggering, jumper-selectable
• Digital output:
  Logic level 0: 0.5 V max. @ 24 mA (sink)
  Logic level 1:2.0 V min. @ 15 mA (source)
• Digital Input:
  Logic level 0: 0.8 V max.
  Logic level 1: 2.0 V min.
• Transfer rate:
  300 Kbytes/sec typical
  500 Kbytes/sec max.
• Connectors: 50-pin male ribbon-cable connectors. Pin assignments are fully compatible with Opto-22 I/O module racks
• Dimensions: 4.9" (L) x3.9" (H) (125 mm x 100 mm)
• Power consumption:
  +5 V @ 0.5 A typical
  +5 V @ 0.8 A max.

Ordering Information

PCL-724

24-bit Digital I/O Card, utility disk and user's manual

PCLD-782B

24/16-channel Opto-isolated Digital input Board

PCLD-785B

24/16-channel Relay Output Board

PCLS-DLL-DIO $FREE

Window 3.1 DLL Driver