发明名称 |
Programmable logic controllers and the expression of relay ladder diagrams. |
摘要 |
<p>A programmable logic controller checks each statement of an instruction list (IL) program to determine if any such statement or the order of statements violates one of a set of syntax rules which are stored in a memory in the controller. If a rule violation is found, an error indication is generated to signify that the particular IL program under test by the controller can not be accurately converted or translated into a relay ladder diagram. However, if no rule violation is found by the controller, then the controller accepts the IL program.</p> |
申请公布号 |
EP0424056(A2) |
申请公布日期 |
1991.04.24 |
申请号 |
EP19900311242 |
申请日期 |
1990.10.15 |
申请人 |
GE FANUC AUTOMATION NORTH AMERICA, INC. |
发明人 |
SEXTON, DANIEL WHITE;HALL, KENNETH BRUCE;BAILEY, ALAN HARDY |
分类号 |
G05B19/048;G05B19/05;G06F9/445;G06F9/06 |
主分类号 |
G05B19/048 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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