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第七讲PC在机 床上常用的智能 模块及通讯应用 简介(二) 四、PC机中的A/D和D/A模块 1. A/D模块 1)简介 A/D转换输入模块类型繁多,规格各异,有双通道,也有四通道;输入既是电压型,也有电流型。对电压输入,又有单极性(0～+ 10V、0～+5V、+1～+5V)和双极性(-5～+5V、一10V～+10V)之
Lecture 7 PC-based intelligent modules commonly used in machine tools and communications applications (B) Fourth, PC in the A / D and D / A module 1. A / D module 1) Introduction A / D converter input module variety, Different specifications, there are dual-channel, there are four channels; input is both voltage type, but also current type. The voltage input, there are unipolar (0 ~ +10 V, 0 ~ +5 V, +1 ~ +5 V) and bipolar (-5 ~ +5 V, a 10V ~ +10 V)