List three reasons why specific number system understanding is important.
What will be an ideal response?
Listed here are a few other reasons specific number system understanding is important:
1) Computers and PLCs only understand binary information. In many cases humans have to understand and convert decimal information to and from binary to understand what is happening inside the PLC.
2) If using an octal-based PLC such as a PLC-5, I/O addresses are octal-formatted.
3) When using a PLC-5 or SLC 5/04 processor and Data Highway Plus as your communication network, station addresses are octal.
4) Even though decimal numbers are familiar to humans, PLCs for the most part only understand binary. In many cases information must be converted back and forth.
5) Hexadecimal information is found in processor or I/O module error codes, instruction masking, and DeviceNet ControlNet and Ethernet/IP electronic data sheet file identification, to mention a few.
6) You might use a ControlLogix PAC to communicate with an existing Data Highway Plus or Remote I/O network, both of which are addressed in octal.
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