发明授权
- 专利标题: Data handling module for programmable controller
- 专利标题(中): 可编程控制器的数据处理模块
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申请号: US750572申请日: 1976-12-14
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公开(公告)号: US4122519A公开(公告)日: 1978-10-24
- 发明人: Timothy Bielawski , Odo J. Struger , Lawrence W. DeLong
- 申请人: Timothy Bielawski , Odo J. Struger , Lawrence W. DeLong
- 申请人地址: WI Milwaukee
- 专利权人: Allen-Bradley Company
- 当前专利权人: Allen-Bradley Company
- 当前专利权人地址: WI Milwaukee
- 主分类号: G05B19/05
- IPC分类号: G05B19/05 ; G05B19/18 ; G06F13/28 ; G06F13/08 ; G06F9/19 ; G06F15/46
摘要:
A data handling module connects to the memory of a programmable controller and operates to periodically steal memory cycles from the controller processor to read data out of the memory and write data into it. The data handling module includes a microprocessor which is programmed to perform a number of functions. The function to be performed is indicated by a control status register which is set by the control program and which is periodically examined by the data handling module. The status of the data handling module is also indicated by a register which is examined by programmable controller instructions. In response to directions indicated by the control status register, data files may be transferred between a data file storage and an active data file storage area and messages may be coupled to a TTY which connects to the data handling module.
公开/授权文献
- US5941072A Turbocharged combustion engine 公开/授权日:1999-08-24