6FC5357-0BB15-0AA0

• PROFIBUS DP 接口：
  通过 PROFIBUS DP 主站接口，可以实现分布式自动化组态，从而提高了速度，便于使用。对用户来说,分布式 I/O 单元可作为一个集中式单元来处理（相同的组态、编址和编程）。
  混合组态：SIMATIC S5，SIMATIC S7 为 PROFIBUS 主站，符合 EN 50170 标准。
  注：
  当同时使用 PROFIBUS DP 和 MPI 接口时，只能将下列总线连接器连接到 MPI 接口：
  • 带插口：6ES7 972-0BB42-0XA0
  • 不带插口：6ES7 972-0BA42-0XA0
• 两个附加插槽：
  可用 IF 964-DP 接口子模块连接两个附加的 PROFIBUS DP主站系统。

• 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.