| 主权项 |
1. A facility controlling system comprising:
a controller that either monitors or controls a field instrument; and an engineering device connected to the controller through a network, wherein: the engineering device comprises:
a download executing portion that sends, to an aforementioned controller, either settings data or software to be downloaded by the controller;a deployment schedule designating portion that sends, to the controller, a deployment schedule for deploying to the controller either the settings data or software that has been downloaded; anda deployment commanding portion that sends, to the controller, a deployment command message for causing either the downloaded settings data or software to be deployed to the controller; and the controller comprises:
a controlling portion that either monitors or controls a field instrument;a download buffer memory that saves temporarily either settings data or software that has been downloaded;a program working memory that stores either settings data or software that control the operation of the controlling portion;an operating mode changing portion that switches the controller from an online mode to an offline mode either when the scheduled time for deployment arrives or when a deployment command message is received, and returns the controller to the online mode after the deployment of either the downloaded settings data or software to the program working memory has been completed; anda deployment executing portion that deploys, into the program working memory, either settings data or software that has been downloaded from the engineering device and stored in the download buffer memory. |
