有效优化扩展I/O点提高PLC系统的性价比  

The valid excellent turn to expand the I/O to increase the function and value comparison of the PLC system

作　　者：曲海波[1] 

机构地区：[1]威海职业技术学院,264210

出　　处：《机床电器》2007年第6期42-44,共3页Machine Tool Electric Apparatus

摘　　要：在利用PLC对复杂化的设备进行控制及改造时,常常遇到PLC的I/O点数不够用的情况。本文从软件和硬件两方面介绍了PLC在实际应用中优化扩展I/O点的几种常规有效方法,这些方法可大大降低硬件成本,在机床电气控制及改造中具有很高的实用价值。While making use of the equipments of the PLC for complication to carry on the control and reformation, usually meet the PLC I/O to order number not enough the circumstance that use. This text introduced the PLC from the software and the hardware both side excellent turn to expand a few methods with valid normal regulations that the I/O order in actual application, these methods can lower the hardware cost consumedly, having the very high and practical value in the machine tool electricity control and reform.

关 键 词：优化扩展 PLC I/O点 软硬件 性价比 

分 类 号：TM571.61[电气工程—电器]