13问答网 > 用西门子S7-200 CPU224XP的PLC写一个串口接收（RCV）的程序

用西门子S7-200 CPU224XP的PLC写一个串口接收（RCV）的程序

2025-03-15 17:23:38
推荐回答（1个）
回答1：

问题1、你既然定义了smb87为B0，为什么没有smb89的结束符检测，为什么没有smw90空闲现检测；smn94的最大字符串也没定义

问题2、建议你使用接受完成中断

中断Int_0

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