Need is dictated by size of ladder logic program. Lower cost and compactness make these ideal for small applications. Shoebox - A compact, all-in-one unit (about the size of a shoebox) that has limited expansion capabilities. Rack/Chassis - A rack or number of racks are used to put PLC cards into. These are essential when diagnosing problems. Indicator lights - Indicate mode/power and status. I/O (Input/Output) - A number of input/output terminals to connect to the actual system ![]() Power supply - Provides voltage/current to drive the electronics (often 5V, +/- 12V, +/- 24V)ĬPU - Where ladder logic is stored and processed the main control is executed here.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |