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2 • Introduction
PCIDIO 24H/48H/96H are equipped with 1,2, and 4 50-pin male ribbon
connectors respectively.
1.1 Features
The 24H/48H/96H series products provide the following advanced features:
1.1.1 Digital I/O Ports
l 24/ 48/96 TTL/DTL compatible digital I/O lines
l Emulates industry standard mode 0 of 8255 PPI
l Buffered circuits for higher driving
l Direct interface with OPTO-22 compatible I/O module
l Output status read-back
1.1.2 Timer/Counter and Interrupt System
l A 32 bits timer to generate watchdog timer interrupt
l A 16 bits event counter to generate event interrupt
l Programmable interrupt source
l Dual interrupt system
1.1.3 Miscellaneous
l Provide 12V and 5V power supply on OPTO-22 connectors
l On board resettable fuses to protect power supply for external devices
1.2 Applications
l Programmable mixed digital input & output
l Industrial monitoring and control
l Digital I/O control
l Contact closure, switch/keyboard monitoring
l Connects with OPTO-22 compatible modules
l Useful with A/D and D/A to implement a data acquisition & control
system