| 详细介绍： 西门子CPU417订货号：6ES7417-4XT05-0AB0
CPU 417-4的：
强大的处理器：
的CPU实现指令执行时间为0.018微秒每二进制指令的低。
30 MB RAM （其中有15 MB的程序和数据） ;
快速RAM ，用户程序的有关执行部分。
灵活的扩展：
高达262144数字和16384模拟输入/输出。
多点接口MPI ：
与MPI ，它可以建立简单的网络最大。在数据传输速率可达12 Mbit / s的32站CPU可以建立多达44连接到通讯总线（ C总线）和MPI站】注意： 】如果PROFIBUS DP接口和MPI接口同时工作，这是唯一可行的连接下面的总线连接器MPI接口：
带插座： 6ES7 972 - 0BB41 - 0XA0
没有插座：6ES7 972 - 0BA41 - 0XA0
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- Block protection:
a password concept also protects the user program from unauthorized access - Integrated HMI services:
The user only has to specify the source and destination of the data with HMI devices. The data are then transported cyclically and automatically by the system. - Integrated communication functions:
- PG/OP communication
- Global data communication
- S7 standard communication
- S7 communication
Configurable Attributes
The STEP 7 tool "Hardware configuration" can be used to program the properties and response of the S7-400 including the CPUs, e.g.
- Multipoint interface MPI:
- Definition of node addresses
- Startup/cycle behavior
- Stipulation of the maximum cycle time and communication load
- Address allocation:
Addressing of I/O modules - Retentive area:
Definition of the number of retentive bit memories, counters, timers, data blocks, and clock memories - Size of the process image, local data
- Length of the diagnostics buffer
- Protection level:
Definition of access authorizations to program and data - System diagnostics:
Definition of the handling and scope of diagnostics messages - Timed interrupts:
Setting of periods - Configuring
Reporting functions
- Status and fault indicators:
LEDs indicate internal and external faults and operating modes such RUN, STOP, restart, test function, etc. - Test functions:
The PG can be used to display signal states in program execution, modify process tags irrespective of the user program, read out the contents of stack memories, run separate program steps and inhibit program components. - Information functions:
The PG can be used to provide the user with information about the memory capacity and operating mode of the CPU, and the current utilization of the working and load memories.
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