Communication system for control applications
US5710755A · kind A · utility
20Cited by
6References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 15, 1993 |
| Grant date | Jan 20, 1998 |
| Priority date | — |
| Expiry date | Nov 15, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/25176
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The communication system is a cyclic, serial, multi-drop, master-slave, half-duplex protocol having data formatted into receive frames and transmit frames carried on separate wires. Both receive frame and transmit frame have the same structure and are synchronized with each other. Each frame comprises a flag byte followed by 8 device channels, each channel comprising 3 bytes space. The flag byte is used as a reference for frame synchronization. Physical connection is by way of two half duplex RS-485 multipoint links utilizing telephone cable for connection between devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.