MODBUS is a communication protocol used for transmitting data between electronic devices, typically for industrial automation purposes. It was developed in the late 1970s and has become a widely adopted standard in the industry.
Having inexpensive MODBUS devices for system testing allows for more cost-effective and efficient testing of industrial automation systems. This is especially important for smaller companies or those with limited budgets.
MODBUS devices are commonly used in industrial automation systems for tasks such as monitoring and controlling equipment, collecting data, and communicating between different devices.
MODBUS RTU (Remote Terminal Unit) uses a serial communication interface, while MODBUS TCP (Transmission Control Protocol) uses an Ethernet connection. Additionally, MODBUS RTU is typically used for communication between a master device and multiple slave devices, while MODBUS TCP allows for communication between multiple devices in a peer-to-peer network.
While inexpensive MODBUS devices can be a cost-effective option for system testing, they may not have all of the features and capabilities of more expensive devices. This could potentially limit the types of tests that can be performed or the accuracy of the results.