多主STD总线工控机系统组成及工作原理

The Formation and Working Pinciple OF Industrial Control Coputer System with the Multi-processor Std

本文介绍了多主STD总线工业控制机系统结构、特点、总线仲裁和邮箱通信 ,并着重论述了系统邮箱的作用。

This paper introduces the system structure, peculiarities, bus arbitrator and mailbox communication of the industrial control computer system with the multi-processor STD BUS, and mainly deals with the effect of the system mailbox and the method to achieve the multiprocessor communication inside the CPU by the user's mailboxes.