| 摘要 |
<p>The invention concerns a time-sharing communication architecture of digital data for process control system comprising various programmed operating units (8, 10, 11) in particular on-site units (8) located at process interface level which process and store data which at least another unit internal to the system or an external computer is capable of accessing, via at least an local area network of said communication architecture. At least some of the units comprise a HTTP server (9) to be able to respond by sending an optionally interactive electronic record to requests received from another unit of the system or from a computer, in particular external to the system, equipped with a HTTP/TCP/IP protocol stack and acting as client, without interfering with the priority and deterministic exchanges related to the process control in real time.</p> |
