If you are developing or debugging serial devices or applications, you would like to be able to monitor and analyze data transmission between devices and applications. There are a few situations where the use of a Modbus RTU tester can be very helpful.

How to test Modbus RTU with Serial Port Monitor Modbus RTU is the implementation of the Modbus protocol that is most often used in industrial applications and automated production facilities. A distinguishing characteristic of Modbus RTU is its use of binary coding and strong CRC error-checking. The two modes are Modbus RTU and ASCII and are both designed to be used with serial devices supporting the RS232, RS485, and RS422 protocols. Modbus RTU (Remote Terminal Unit) is one of the two transmission modes defined in the original Modbus specification. Industrial automation and supervisory control and data acquisition ( SCADA) systems often employ the Modbus protocol. Modbus is often used in scenarios where multiple instrumentation and control devices transmit signals to a central controller or system to gather and analyze data. It is built using a master/slave architecture and supports serial devices that use the RS232/RS485/RS422 protocols.

The protocol was developed and published by Modicon® in 1979 for use with its programmable logic controllers. Its adoption has been spurred on by its ease-of-use, reliability, and the fact that it is open-source and can be used royalty free in any device or application. It has become widely accepted and is used extensively in the construction of Building Management Systems (BMS) and Industrial Automation Systems (IAS). Electronic devices can exchange information over serial lines using the Modbus protocol. The Modbus RTU protocol is a means of communication that allows data exchange between programmable logic controllers (PLCs) and computers.

How to test Modbus RTU with Serial Port Monitor.

What is the difference between Modbus RTU vs ASCII and Modbus RTU vs TCP/IP? How to test Modbus RTU protocol with Modbus RTU monitoring software. In this article, we are going to explain all aspects related to Modbus RTU communication.

Modbus rtu serial communication protoco