本文介绍了一种有心电监护仪、血氧监护仪、血压监护仪和上层管理软件组成的中央医疗监护系统,并详细介绍了Modbus 通信协仪在该系统中的具体应用。 关键词:Modbus 协议;CRC 校验;监护仪;中央监护系统; Abstract: This paper introduces a kind of central iatrical monitoring system composed of ECG monitor, oxygen saturation monitor, blood pressure monitor and upper management software, and introduces particularly the application of Modbus communication protocol in this system. Key words: Modbus protocol, CRC checking; monitoring apparatus; the central monitoring system.