The DCS control system collects the signals detected by various process parameters (such as pressure, flow, liquid level, temperature, etc.) distributed in the production site, concentrates them in the central control station, and uses advanced control algorithms to complete the control operation to achieve the purpose of regulating and controlling the field parameters. Gaoda Technology is a pioneer in the industry in introducing Siemens PCS7 process control system. With 30 years of development, it has provided tens of thousands of systems and products for nearly 1,000 production lines at home and abroad.
DCS system topology diagram
In order to meet the challenges in the manufacturing, process and building automation industries, Siemens has proposed its own unique solution - Totally Integrated Automation (TIA) and Totally Integrated Power (TIP) drive and automation solutions, which are suitable for various industries. The SIMATIC PCS7 process control system is the core of Totally Integrated Automation (TIA), which realizes a unified and customer-compliant automation platform for all fields in production, process control and integrated industry.
By adopting the fully integrated automation solution of SIMATIC PCS 7, consistent data management, communication and configuration can be achieved, with excellent performance and forward-looking guarantee to meet the typical process control system application requirements.
Simple and reliable process control User-friendly operation and visualization, also via the Internet Powerful, fast and consistent system-wide engineering and configuration System-wide online changes System openness at all levels Flexibility and scalability Safety-related automation solutions Extensive fieldbus integration Asset management of instrumentation and control devices (diagnostics, preventive maintenance and repair)
1. PCS7 Engineering System—ES
SIMATIC Manager is the control center of engineering control, a comprehensive platform for engineering tool suites, and the configuration basis for all engineering tasks of the SIMATIC PCS7 process control system. All aspects of the creation, management, archiving and recording of SIMATIC PCS7 projects are carried out here.
The configuration contents mainly include:
Control system hardware, including distributed I/O and field devicesCommunication network for automation functions of continuous and batch production processes (AS engineering configuration)Operation and monitoring functions (OS engineering configuration)Diagnostic and asset management functionsHardware configuration: In HW-Config, you can configure hardware, such as automation system (AS), bus and process IO, etc., and also perform network configuration.
Continuous Function Chart (CFC):
The CFC editor is a tool for graphical configuration and debugging of continuous automation functions. With the support of powerful automatic path selection and HMI message integration configuration, pre-configured function blocks can be positioned, configured and interconnected within CFC.
In addition to convenient editing functions, CFC functions also include powerful testing and debugging functions, as well as individually configurable documentation functions.
Simulation: Using S7-PLCSIM simulation software, users can test user programs created with CFC/SFC on PG/PC, regardless of whether the target hardware is available. Therefore, errors can be detected and eliminated in the early development stage. This allows for rapid debugging, reduced costs and higher program quality.
2. PCS7 Operator System - OS
The operator system of the SIMATIC PCS 7 process control system allows operators to execute processes conveniently and safely. The operator can observe the process sequence via various views and intervene if necessary to control the system.
The operator system architecture is highly variable and can be flexibly adapted to different plant architectures and customer requirements. The basis of the architecture is formed by perfectly coordinated single-user system operator stations (OS single stations) and multi-user system operator stations with client/server architecture.
Window function: The window with no fixed position can display the specific parameters or trends of a device or control object, which is convenient for the operator to operate or analyze it.
Archiving trends: One or more time axes correspond to one or more value axes with fixed or dynamic range values in the trend window. The scale of the value axis can be linear, logarithmic, percentage or freely configurable. The trend shows the corresponding process value at each point in time. The number of curves displayed in the trend window is freely selectable. The style and color can be configured individually, and the number of color changes is limited. Grids and rulers can be used to increase readability and orientation. It is possible to combine several curves into a curve group with a common time axis and value axis, and it is also possible to configure multiple curve windows. If necessary, these curve windows can be linked to compare process values. Linked curve windows have a common time axis, zoom ratio, scroll bar and ruler.
Message system: Up to 150,000 messages can be configured per OS single station/OS server: Predefined system messages, individual or group messages triggered by system events, operator input messages initiated by changes in process status, messages generated during manual operation of objects The message system integrated in the operator system records these process messages and local events via the freely configurable AlarmControl functions (message view/window), saves them in the message archive and then displays them.
