模拟量输出模块：电压，电流
功能模块 (FM)
功能模块主要用于对时间要求苛刻、存储器容量要求较大的过程信号处理任务。
-计数：计数器模块
-定位：快速/慢速进给驱动位置控制模块、电子凸轮控制器模块、步进电动机定位模块、伺服电动机定位模块等
-闭环控制：闭环控制模块
-工业标识系统：接口模块、称重模块、位置输入模块、超声波位置解码器等。
接口模块 (IM)

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