3 控制和测量 __________________________________________________________________________________________ 10 4 信号传输 __________________________________________________________________________________________________________ 11 5 输出继电器 __________________________________________________________________________________________________________ 12 6 串行通信 ______________________________________________________________________________________________ 12 7 数字输入 ___________________________________________________________________________________________________________ 13 8 测试 _______________________________________________________________________________________________________________ 13 9 键盘和显示操作 _____________________________________________________________________________________________ 14 10 读取测量值和记录参数 __________________________________________________________________________ 15
主要关键词