304 Pet Crystallizer Dryer Central Conveying System With PROFINET System

1. Introduction

PROFINET is a standard developed by PNO (PROFIBUS User Organization) for industrial Ethernet:An internationally established IT

standard for communications (such as the TCP/IP protocol) has great advantages in designing, installing, and commissioning to normal

production:

Firstly, because of smart devices scattered at the front end can perform more complex tasks, separate controllers, computing units, etc.

are no longer needed which can save hardware investment and use area;

FCS wiring is relatively simple, and one transmission line can be connected to multiple devices, which greatly saves installation costs.

Since the field control equipment often has a self-diagnostic function and can send fault information to the control room, the maintenance

work is reduced.

Meanwhile, Since users have a high degree of system integration autonomy, they can choose the right manufacturer products through

flexibility.The reliability and accuracy of the overall system is also greatly improved.

All of this helps users to reduce the cost of installation, use, and maintenance, and ultimately achieve the goal of increasing profits.

2. communication network

Field communication network for interconnection of field equipment or field instruments used in process automation and

manufacturing automation

3. Equipments Interconnected

According to the actual need to use different transmission media to connect different field equipment or field instruments

4. Interoperability

Users can choose different manufacturers or different types of products according to their own needs to form the required control loop, so that they can freely integrate FCS.

5. Distributed Function Block

Profinet discards the input/output unit and control station of the DCS, and distributes the function blocks of the DCS control station to the field instruments in a distributed manner, thus forming a virtual control station and completely implementing decentralized control.

6. Communication Line Power Supply

The communication line power supply mode allows the field instrument to directly ingest energy from the communication line.This method provides a low-power field instrument for intrinsically safe environment, and is also equipped with a safety barrier.