Siemens PLC S7-400 Series

S7-400 PLC is a major hardware platform upgrade of the CPU

IntroductionS7-400 PLC is a major hardware platform upgrade of the CPU, it was made innovation in the following aspects: increase processing speed, CPU processing speed is increased by 3 to 70 times: CPU resources margin increased, work memory doubled, up to 20MB, the number of timers and counters increased by 8 times to 2048, the hardware redundancy rate is faster, sync cable is up to 10 km.

1. power supply module2. back-up battery3. mode switch (key operation)4. status and fault LED5. Memory Card6. the first connector with label area7. CPU 18. CPU 210. I / O template11. IM Interface Module

powerful PLC, for the field of high-performance control solutions to meet the requirements of the most complex tasksthe CPU of functional classification and the full range of templates can always find the best solution for automation tasks easy to implement distribution systems and communications capabilities  user friendly, simple operation, fan-free designWith the expansion of the application, system expansion without any problems

SIMATIC S7-400 applications include:

general mechanical engineeringauto industryWarehouseMachine and Toolprocess controlcontrol technology and instrumentation textile machinerypackaging machinerycontrol equipmentspecial machinery

Design ReviewS7-400 automation system adopts modular design. It can be assembled flexibly according to the different needs because it has extension and configuration function of the templates. A system includes: power supply module, the central processing unit (CPU), a variety of signal templates (SM), communication templates (CP), function template (FM), interface modules (IM), SIMATIC S5 template.

System installationSimple design makes the S7-400 system wide, flexible, and applicable.

ExtensionUp to 21 expansion units (EU) can be connected to the central controller (CC) through the interface template (IM); centralized expansion; distribution expansion with EU; remote extension with ET 200.

 Functionhigh-speed instruction processinguser-friendly parameter settingpassword protectionsystem functionuser-friendly operator control and monitoring functions (HMI) has been integrated in the SIMATIC operating system.mode selector switch

CommunicationSIMATIC S7-400 as DP master, can be integrated in the SIMATIC S7-400 CPU on the PROFIBUS-DP interface (option)

Overview of data communicationthrough the global data (GD) communication packets can be exchanged periodically between the CPU on the network.MPI, PROFIBUS or Industrial Ethernet for networking.

By the multipoint interface (MPI) data communicationMulti-point interface (MPI) communication interface integrated in the SIMATIC S7-400 CPU, it uses for:programming and parameter settingcontrol and monitoringflexible configuration optionsas DP masterestablished simple network structure between the communication partners a variety of connectivity: MPI support simultaneous connections of 32 stations.communication connection, S7-400 CPU can also create connection of 64 stationsup to 32 MPI nodes, data transfer rate up to 12M bit / s.

Data communication by the CP (point to point)

By CP (PROFIBUS or Industrial Ethernet) for data communication

Outlinefault-tolerant automation systems designredundant central featureenhance I / O availability: switchable I / O configurationalso be applied to conventional I / O: unilateral configurationhot standby: automatically switches to the standby unit when the failure event occurs2 separate or a separated central rack configurationconnected to the redundant PROFIBUS-DP can be switched on I / O.

ApplicationAs the SIMATIC S7-400H with high availability, it is particularly suitable for the following applications:In case of downtime, will cause significant economic lossesprocess control contains valuable materials (such as the pharmaceutical industry)unattended applications.the occasion that needs fewer people to maintain.

Siemens PLC S7-400 Series