Acces I/O products PCI-IDO-48A, Руководство пользователя

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Manual PCI-IDO-48A Series
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Chapter 1: Introduction
The PCI-IDO-48A is a PCI board providing opto-isolated discrete outputs with load voltages
up to 60VDC. Solid-state, P-Channel FET switches are used as the output elements
providing greater reliability and much faster turn-on and turn-off time than is possible with
electromechanical relays. Immediate and External Trigger modes offer flexibility for updating
the outputs.
Features

Up to 48 individually isolated digital Outputs

Immediate and External Trigger Modes

Trigger Over-run / Buffer Under-run error detection

All solid-state design permits higher throughput than is possible with electromechanical relays

Load voltages up to 60VDC

Outputs off at power turn-on and computer reset

Output connectors via on-card ribbon-cable headers

Lower cost per point than externally-racked solid-state relay modules
Applications

POS (Point-of-sale) Systems

Gaming Machines

Telecommunications

Industrial Automation

ATM (Automated Teller Machine) Systems

Multiple terminal control

Office Automation

Kiosks
Functional Description
This series of cards provide 48, 32, or 16 opto-isolated discrete outputs. Each output is
individually isolated using solid-state, P-Channel FET switches. These switches provide
higher throughput in comparison to electromechanical relays. The outputs require user-
supplied load voltages ranging from 5VDC to 60VDC. Diodes are included across the load for
inductive-spike protection.
The outputs are grouped into six 8-bit bytes. There are two software selectable modes for
updating the outputs: Immediate and External Trigger mode. Immediate mode updates the
outputs as they are written. External Trigger mode stores the written output values into a
buffer. The buffer contents are transferred to the outputs with a rising edge of the External
Trigger. Outputs can be written multiple times without an External trigger occurring.
However, only the last written values will be transferred upon a rising edge of the External
Trigger. The Trigger Control Register can also be software configured to reset both the buffer
contents and outputs on a falling edge. This allows pulse-width control of the outputs.