6ES7307-1BA01-0AA0 控制系统
电源（PS） 可以将市电电压（交流120/230V）转换为24V直流工作电压，
S7-300 CPU和24V直流负载电路（信号模块、传感器、执行器等）提供电源 CPU附件：前连接器（用于带有集成I/O的CPU） 执行用户程序；
为S7-300背板总线提供5V电源； 在MPI网络中，通过MPI（多点接口）与其他MPI网络节点进行通讯；专用CPU的其他特性：
PROFIBUS子网中的DP主站
PROFIBUS子网中的DP从站
技术功能
点对点通讯 CPU还有其他的不同性能：
不同的模式选择开关：
312IFM至318-2DP有钥匙选择开关
312C至314C-2PiP/DP有滑动开关 另一个区别在于存储卡
信号模块（SM） （数字输入模块、数字输出模块、数字I/O模块、模拟输入模块、模拟输出模块、模拟I/O模块）
附件：前连接器 使不同的过程信号电平和S7-300的内部信号电平相匹配 功能模块（FM）
附件：前连接器 用于时间要求苛刻，存储器容量要求较大的过程信号处理任务，例如定位或闭环控制功能 通讯处理器（CP）
附件：连接电缆 扩展中央处理单元的通讯任务，例如CP342-5DP与PROFIBUS-DP的连接 SIMATICTOP连接
附件：带有带状电缆端子的前连接器模块 用于数字量模块的连接（预连接的端子块） 接口模块（IM）
附件：连接电缆 连接S7-300的各个机架 带总线连接器的PROFIBUS总线电缆 连接MPI或PROFIBUS子网上各个节点
编程器电缆 连接CPU和编程器（PG/PC）
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