MODBUS UDP
MODBUS UDP is a variant of MODBUS TCP that operates over the UDP transport layer. It offers lower latency than TCP but does not guarantee connection reliability (connectionless).
When to Use
Section titled “When to Use”- Applications requiring low latency
- Simple, lightweight communication needs
- Multicast data distribution scenarios
- Situations where TCP connection overhead is unacceptable
Configuration
Section titled “Configuration”MODBUS UDP configuration follows the same steps as MODBUS TCP. The only difference is selecting MODBUS UDP as the protocol when creating the connection.
| Parameter | Difference |
|---|---|
| Protocol | Select Modbus UDP |
| Port | Default: 502 |
| All other parameters | Same as MODBUS TCP |
MODBUS UDP Slave
Section titled “MODBUS UDP Slave”inSCADA can also operate in MODBUS UDP Slave role. In this mode, external systems can connect to inSCADA via UDP and read data.
Select Modbus UDP Slave as the protocol for configuration.