Copyright © 1996, 1997, 1998, 1999, 2000, national control devices 8sc rs-232 input scanner users guide revision 1.0 b y r y a n s h e l d o n.
Disclaimer: ncd will not be responsible for any personal injury or damage to computers or other electronic devices caused in conjunction with the use of ncd products. The user assumes full responsibility of any and all damage that may result in combination with ncd products, services, and literature...
Helpful hint. Could cause problems later under normal operation. Fatal mistake. The x tells about common assem- bly and operation errors as well as other things to watch out for. The check is a guide to help the user with assembly and operation. Use them to prevent mistakes. Interfacing to the seria...
Input 1 input 2 input 3 input 4 input 5 input 6 input 7 input 8 ground when resistor network rn2 is installed, all inputs are pulled high (on) and can be turned off by connecting a wire to the ground line. J1-j4 - address select. These jumpers de- fine the device number of the 8sc, allow- ing 16 dev...
J 6 inputs d0-d7 are pulled up via rn2 4.7k resistor network. Data inputs rs-232 ground rs-232 input open collector rs-232 output j 4 j 3 j 2 j 1 + 5 j 5 cr 1 2 3 cr1 rn1 rn1 + 5 v+ + 5 78l05 v+ c1 c1 d0 d1 d2 d3 d4 d5 a b c g w y d6 d7 74ls251 4 3 2 1 1 5 1 4 1 1 1 0 9 7 6 5 1 3 1 2 u4 u1 u2 r2 r3 ...
The ncd-110c interface processor and how it works: the ncd-110c is a pic-based computer that has been programmed to listen to incoming data on the serial port and to respond only if its name is called. To understand how it works, we will examine the processes of the 110c as they were written into th...
We welcome suggestions and recommendations. Please tell us about any errors or omissions you may find in this manual. All recommen- dations become the property of ncd inc. The 8sc input scanner is property of national control devices. Copyright © 1996, 1997, 1998, 1999, 2000, all rights reserved. Am...
