发明名称 |
CONTACT HISTOGRAM FOR PROGRAMMABLE CONTROLLER |
摘要 |
<p>CONTACT HISTOGRAM FOR PROGRAMMABLE CONTROLLER A controller programmer connects to a programmable controller and serves as a means for loading and editing the control program. When the contact histogram mode of operation is employed the logic state of a selected I/O device connected to the controller is monitored, and each time its status changes, its present status is recorded along with the time interval between status changes. A first embodiment is described in which the invention is employed in a hardwired controller program loader and a second embodiment is described in which the controller program loader employs a programmed microprocessor. In the first embodiment the status changes are recorded on paper tape and in the second embodiment they are recorded on a cathode ray tube screen.</p> |
申请公布号 |
CA1070844(A) |
申请公布日期 |
1980.01.29 |
申请号 |
CA19770271468 |
申请日期 |
1977.02.10 |
申请人 |
ALLEN-BRADLEY COMPANY |
发明人 |
GRANTS, VALDIS;STRUGER, ODO J. |
分类号 |
G05B19/05;(IPC1-7):06F11/00 |
主分类号 |
G05B19/05 |
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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