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1. 发明授权

US5495588A Programmable controller having joined relay language processor and general purpose processor 失效
标题翻译：可编程控制器已加入中继语言处理器和通用处理器
公开(公告)号：US5495588A
公开(公告)日：1996-02-27
申请号：US365979
申请日：1994-12-28
申请人： Anthony G. Gibart , Kurt Knull
发明人： Anthony G. Gibart , Kurt Knull
IPC分类号： G05B19/05 , G06F9/38 , G06F9/455
CPC分类号： G06F9/3877 , G05B19/052 , G06F9/3879 , G05B2219/15127
摘要： A programmable controller for executing general instructions and relay ladder instructions employs a general purpose microprocessor together with a high speed relay ladder processor. The relay ladder instruction in a user program are executed by the special processor exclusively. When a general instruction is encountered, the special processor releases the general purpose microprocessor from a wait state and provides it with data in response to a previous long read instruction. This data is interpreted by the microprocessor to indicate the next instruction to be executed and points to a series of machine instructions terminating in another long read instruction to a designated address. When a read of this designated address is detected by the special processor, thus indicating the conclusion of the execution of the general instruction, the special processor puts the microprocessor back in the wait state and continues to execute relay ladder instructions in the user program if any. The allocation technique may be used with a large class of general purpose microprocessors with no modification and without the need for separate allocation circuitry.
摘要翻译：用于执行通用指令和梯形图指令的可编程控制器与高速梯形图处理器一起使用通用微处理器。用户程序中的梯形图指令由专用处理器执行。当遇到通用指令时，特殊处理器将通用微处理器从等待状态释放，并响应于先前的长读指令为其提供数据。该数据由微处理器解释以指示下一个要执行的指令，并指向终止于指定地址的另一个长读指令的一系列机器指令。当特殊处理器检测到该指定地址时，由此表示通用指令的执行结果，特殊处理器将微处理器置于等待状态，并在用户程序中继续执行梯形图指令，如果有的话。分配技术可以与大类通用微处理器一起使用，不需要修改，也不需要单独的分配电路。

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