Knowledge

 How many communication methods for PLC& VFD?

There are many communication methods for PLC (Programmable Logic Controller).

The following are some common communication methods:

1. Serial communication: 

Use serial interfaces (such as RS232, RS485, etc.) for communication, often used for simple data transmission with external devices.

2. Ethernet communication: 

Communication through the Ethernet interface can achieve higher data transmission rates and remote connections. 

3. Modbus communication:

 Modbus protocol is a commonly used communication protocol that can realize data exchange between PLC and other devices (such as sensors, HMI, etc.) through serial port or Ethernet.

4. Profibus communication: 

Profibus is an industrial fieldbus communication protocol, commonly used to connect PLCs and other devices in industrial automation systems.

5. DeviceNet communication: 

DeviceNet is a CAN bus-based communication network used to connect PLCs, sensors, Actuators and other equipment

6. EtherNetIP communication: 

EtherNetP is an Ethernet industrial protocol that allows data to be transmitted between PLCs and other devices that support the protocol.

7. Profinet communication:

Profinet is an Ethernet industrial protocol, widely used in the field of industrial automation, used to connect PLC and other equipment

8. OPC communication: 

OPC (OLE for Process Control) is a standardized data transmission specification, used It is used for data exchange and communication between devices of different manufacturers and different platforms.

Now SOWAKAM VFD general type VFD SW100 &SW200 has standard RS485 modbus with PLC, SW300 series will have RS485 modbus/PROFINET/PROFIBUS/CANOPEN methods.

These are common PLC communication methods, and the choice of communication method should only be decided based on specific application requirements and device compatibility.