PowerBuilder的串口通信在485总线上的应用

Application of Communication of Serial Line Interface of PowerBuilder in 485 Bus

Power Builder有多种访问串口的方法 ,使用控件来完成访问是一种较为便捷且容易实现的方法 ,具有较高的实用价值 ,但使用控件不能直接发送扩展 ASCII码。这里将通过一个实例讲述 ,解决 pb中如何通过控件使用串口向 4 85总线上发送扩展

PowerBuilder has various methods visiting serial line interface.Using CU(Control Unit) to finish visiting is a more convenient and easier one,which has practical value.But using CU can't directly send extended code ASCⅡ.This paper demonstrates a case about how to send extended code ASCⅡ to 485 bus using CU.