Serial Interface for Operator Panel
Original Publication Date: 1989-Apr-01
Included in the Prior Art Database: 2005-Jan-27
A unique 6-wire serial interface for an operator panel provides the same degree of control to the operator as a known 20-wire parallel interface. The present embodiment is more economical and space efficient as the number of ferrites, required on each wire of the interface cable, for RFI suppression, is reduced from 20 to 6. (Image Omitted) Fig. 1 shows the Operator Panel which includes a sixteen-key Keyboard 1, a three-digit Display 2, and a LED (light-emitting diode) indicator 3. Also included is an alarm (not shown). Referring to Fig. 2 it is seen that the Interface cable of the present embodiment connects the Operator Panel to the Control Logic of the parent machine and consists of six lines: Serial Input Line 4, Serial Output Line 5, Strobe line 6, Clock line 7, Power line 8 and Ground line 10.