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1 前言STD 通用 A/D 转换板是 STD5000系列工业控制机的 I/O 模板之一,它与国内外市场上工业标准总线 STD-BUS 是完全兼容的。STD 总线(56条总线)和通常使用的 PC 总线(62条总线)并不一致,这对于同时拥有这两种总线设备的用户,在设备的通用性和兼容性上有不少限制。我们选择 STD 通用12位32通道 A/D转换板与 IBM-PC 机相接,成功地实现了实验室多台仪器的数据采集与处理。本文介绍的 STDA/D 转换板与 IBM-PC 总线的接口技术,对需要了解 STD 总线和 PC 总线接口技术的用户将有一定的参考价值。
1 Introduction STD general purpose A / D converter board is one of the I / O modules of STD5000 series industrial controller. It is fully compatible with the industry standard bus STD-BUS in the domestic market. The inconsistency between the STD bus (56 buses) and the commonly used PC bus (62 buses) has many limitations on the versatility and compatibility of devices that have both bus devices. We selected STD Universal 12-bit 32-channel A / D converter board connected with the IBM-PC, the successful realization of the laboratory multi-instrument data acquisition and processing. This article describes the STDA / D conversion board and IBM-PC bus interface technology, need to understand STD bus and PC bus interface technology users will have some reference value.