Power up communication interface system
US6175207A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1999 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Jul 29, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B19/042
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A controller for a system has two or more operating modes. The controller operates according to a different control algorithm in each operating mode. A manually operable switch typically used for sending a reset signal to the controller, may also be used to change operating modes. The controller changes operating mode when it detects that the switch is manually operated during a preselected phase of controller operation, typically when power is first applied. The disclosed embodiment allows up to four different operating modes to be selected. A first selection of operating modes can occurs if the switch is held closed during startup and then immediately released. A second selection of operating mode occurs if the switch is pressed within a preselected time interval after power is first applied to the controller. Both selections can be made during a single start-up event. The controller may use a status light if present, to visually indicate what operating mode has been selected after the time intervals in which to change operating modes have elapsed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.