Advantech PCI-1739U Manual de usuario descargar pdf (Pagina 12)

PCI-1737U/PCI-1739U User Manual 2

Chapter 1 General Information

The PCI-1737U/PCI-1739U is a 24/48-bit DI/O card with PCI bus. It pro-

vides you with 24/48 bits of parallel digital input/output. It emulates

mode 0 of the 8255 PPI chip, but the buffered circuits offer a higher driv-

ing capability than the 8255. The I/O bits are divided into three 8-bit I/O

ports: A0, B0, and C0.( Six for PCI-1739U, A0, A1, B0, B1, C0, C1) You

can configure each port as either input or output via software.

The interrupt handling capability provides users the flexibility to generate

interrupt to a PC. 1-pin in the connector can output a digital signal simul-

taneously with the card's generating an interrupt. (2-pin for PCI-1739U)

The other features give the PCI-1737U/PCI-1739U practical advantages

in an industrial setting. When the system is hot reset or power on, the I/O

port settings and output values of PCI-1737U/PCI-1739U will be deter-

mined by switch.

1.1 Features

• Function Compatible with PCL-724/731 (24/48 TTL digital I/O lines)

• Emulates mode 0 of 8255 PPI

• Buffered circuits provide higher driving capability

• Output status readback

• Programmable interrupt handling

• Pin compatible with Opto-22 I/O module racks

• PCI universal card (both 3.3V and 5V signaling)

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Advantech PCI-1739U Manual de usuario Pagina 12