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
Содержание PCI-1751U
Страница 1: ...PCI 1751U 48 bit Digital Input Output Card with Universal PCI Bus User Manual ...
Страница 5: ...2 CHAPTER 1 General Information ...
Страница 9: ...2 CHAPTER 2 Installation ...
Страница 15: ...11 Chapter2 2 5 PCI 1751U Block Diagram Figure 2 2 PCI 1751U Block Diagram ...
Страница 18: ...PCI 1751U User Manual 14 ...
Страница 19: ...2 CHAPTER 3 Operation ...
Страница 28: ...PCI 1751U User Manual 24 ...
Страница 29: ...2 APPENDIX A Function of 8254 Counter Chip ...
Страница 37: ...2 APPENDIX B Register Format of PCI 1751U ...
