40 modbus gateway, Chapter 40, Modbus gateway – Westermo RedFox Series User Manual
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Westermo OS Management Guide
Version 4.17.0-0
Chapter 40
Modbus Gateway
This chapter describes the Modbus Gateway application available on WeOS prod-
ucts equipped with a serial port. The Modbus Gateway is used for interconnecting
a Modbus/TCP network with a Modbus/RTU or a Modbus/ASCII network.
The Modbus Gateway has two operational modes, server and client:
❼ Server:
Allowing one or many Modbus/TCP masters to connect to one or
many serial Modbus slaves. In this mode the gateway acts as Modbus/TCP
slave on the TCP/IP side and a Modbus Master on the serial side. All incoming
Modbus/TCP requests are converted into either Modbus/RTU or Modbus/ASCII
requests on the serial side.
1
In server mode, the Modbus Gateway acts as a server on the TCP/IP side (TCP Server).
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