Advantech PCI-1751U Instrukcja Użytkownika Pobierz pdf (Strona 7)

3 Chapter 1

• High density SCSI 68-pin connector

• Output status readback

• Two 16-bit timers can be cascaded to one 32-bit timer, and can generate

watchdog timer interrupts

• One 16-bit event counter can generate event interrupts

• Keeps port I/O settings and digital output states after hot system reset

• Supports dry contact and wet contact

• BoardID

1.1.3 Applications

• Industrial AC/DC I/O devices monitoring and control

• Relay and switch monitoring and control

• Parallel data transfer

• Sensing the signals of TTL, DTL, CMOS logic

• Driving indicator LEDs

1.1.4 Specifications

• I/O channels: 48 digital I/O lines

• Programming mode: 8255 PPI mode 0

1.1.5 Input Signal

• Logic high voltage: 2.0 to 5.25 V

• Logic low voltage: 0.0 to 0.80 V

• High level input current: 20 mA

• Low level input current: -0.2 mA

1.1.6 Output Signal

• Logic high voltage: 2.4 V minimum.

• Logic low voltage: 0.4 V maximum

• High level input current: 15 mA maximum (source)

• Low level input current: 24 mA maximum (sink)

• Driving capability: 15 LS TTL

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Advantech PCI-1751U Instrukcja Użytkownika Strona 7