Description
CI854A Classic System 800xA hardware selector PROFIBUS DP is a high speed multipurpose bus protocol (up to 12Mbit/s) for interconnecting field devices, like remote I/O, drives, lowvoltage electrical equipment, and controllers. PROFIBUS DP can be connected to the AC 800Mvia the CI854A communication interface. The Classic CI854A includes two PROFIBUS ports to realize line redundancy and it also supports PROFIBUS master redundancy.
The CI854B is the newPROFIBUS-DP master thatreplaces CI854A in newinstallations. Master redundancyis supported in PROFIBUS-DP communication by using two CI854A communication interface modules. The master redundancy can be combinedwith CPU redundancy and CEXbus redundancy(BC810). The modules are mounted on a DIN rail and interface directly with the S800 I/O system, and other I/O systems as well, including all PROFIBUS DP/DP-V1 and FOUNDATION Fieldbus proficient systems. The PROFIBUS DP must be terminated atthe two outermost nodes. This is usually done by using connectors with built-in termination. To guarantee a correctworking termination the connector has to be plugged and power supplied. Features and benefits Used for connecting remote I/O and fieldbus instruments via PROFIBUS DP Possible to connect PROFIBUS PA to the CI854A/ CI854B via the PROFIBUS linking device LD 800P The CI854A and newer CI854B can be setredundant
Components of industrial controllers
1、 Controller
The core part of an industrial controller is the controller, which mainly includes the central processing unit, memory, input/output interfaces, etc. The central processing unit is responsible for controlling algorithms and program execution, while the memory is used to store program and data files. Through the input/output interface, the controller can interact with external devices for data exchange and control signal output.
2、 Actuator
The actuator is an important component of industrial controllers, used to execute commands issued by the controller. Common actuators include electric actuators, pneumatic actuators, hydraulic actuators, etc. They convert control signals into mechanical motion or energy changes to achieve control over industrial production processes.
3、 Sensors
Sensors are also an indispensable part of industrial controllers, used to collect various parameter information in industrial production processes, such as temperature, pressure, flow rate, vibration, etc. The sensor converts the collected information into electrical signals and sends them to the controller for processing and control judgment. Most controllers can simultaneously connect multiple types of sensors to meet different industrial needs.
In summary, the three major components of industrial controllers – controllers, actuators, and sensors – each have different characteristics and functions, working together to achieve efficient, reliable, and safe control and management of industrial production processes.
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