HS ModBus Test

The widespread use of the Modbus protocol, which was introduced in the past, is partly due to its robustness and partly due to the versatility in all PCL communication-related applications and related aspects in the field.

Running with the RTU or ASCII formats, HS ModBus Test is an application that was designed specifically in order to provide users with a tool for testing the protocol connectivity involved when dealing with Modbus and COM ports or TCP/IP.

As said before, users can rely on HS ModBus Test to connect using either the RTU or ASCII protocols and aside from that, they will be able to read or write holding registers, coils, discrete inputs, and more.

Users are advised to take note of the caveats of the ASCII format, as it is considered less secure than RTU, therefore it is best used when trying to connect to devices that do not support RTU. If dealing with networks that do not offer RTU messaging, and the characters cannot be transmitted as continuous streams to the slave devices, the ASCII format is also preferred.

Lastly, HS ModBus Test’s TCP protocol is in fact a TCP/IP variant, which covers the use of Modbus messaging in both Intranet and Internet environments.