Programmable controller allowing an external peripheral device to monitor an internal operation state of a CPU unit
US5889669A · kind A · utility
41Cited by
0References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1995 |
| Grant date | Mar 30, 1999 |
| Priority date | — |
| Expiry date | Oct 10, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/14042
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A system ROM stores a control program for measuring an internal operation state of a CPU unit, and a data RAM stores a measured internal operation state of the CPU unit. The internal operation measuring control program enables the internal operation state of the CPU unit to be measured in response to a monitor processing request from an external peripheral device, and a measurement result to be sent to the external peripheral device, to thereby allow the external peripheral device to monitor the internal operation state of the CPU unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.