Plc

[petersonra]

Well then that might explain it. Allen bradley's PLC 2's and 5's all use octal addressing. The SLC 500 went to decimal addressing and the CLx also uses the decimal addressing scheme just 32 bit as compared to 16bit. I'm curious as to what brand you are most familiar with? I have some experience with Sencon and Omron plcs but this is limited to replacing them with AB.

PLC5's only use octal for I/O. everything else is decimal.

 

[Strahan]

PLC5's only use octal for I/O. everything else is decimal.

Very true but when installing a RIO network to an existing PLC5 and using a SLC chassis as the RIO you definetly need to keep octal and decimal straight. Not to mention module id's and rack addressing.

 

[wireways]

Hey aprentice to better understand go to
http://www.computerhope.com/binhex.htm