| 摘要 |
A method (700) for providing master time control (MTC) services to historian applications (HAs). Each HA (4142, . . . , 414N) is configured to display content (560, 562) having a time of focus and a local lime control (LTC) user interface (532) when in an LTC mode. The method involves changing a time control mode (TCM) of a first and second HA from the LTC mode to an MTC mode. The method also involves synchronizing times of focus for the first and second HAs to an MTC time of focus. This synchronization is performed in response to the TCM changes. The method further involves displaying first and second content. Each content includes time-stamped historical data (210) obtained during a period of elapsed time defined by the time of focus for said respective first or second HA. |
