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ＣＩＭＳ环境是多进程和多任务的，必须实现进程间的任务同步．ＭＭＳ是支持ＣＩＭＳ中制造设备和自动化系统之间通信的标准语言，但在ＭＭＳ服务定义和协议规范中不存在明显的同步概念．针对这个不足之处，本文在简要介绍ＭＭＳ协议和设备间通信的基础之上，给出了采用ＭＭＳ信号量和事件对象及相应服务实现ＣＩＭＳ环境中多任务同步的方法．
CIMS environment is multi-process and multi-tasking, the task must be synchronized between processes. MMS is a standard language that supports communication between manufacturing equipment and automation systems in CIMS, but there is no obvious concept of synchronization in MMS service definitions and protocol specifications. In view of this shortcoming, on the basis of introducing MMS agreement and inter-device communication briefly, this text has given the method of realizing multitasking synchronization in CIMS environment with MMS semaphore and event object and corresponding service.