To find more information about this feature visit RUT955 Modbus and RUT955 RS232/RS485 pages. This article provides a brief example on how to use Modbus serial to monitor a slave device, send data to server and how to configure slave alarms. Many of the data types are named from its use in driving relays: a single-bit physical output is called a coil, and a single-bit physical input is called a discrete input or a contact. Modbus is often used to connect a supervisory computer with a remote terminal unit (RTU) in supervisory control and data acquisition (SCADA) systems.
Modbus enables communication among many devices connected to the same network, for example, a system that measures temperature and humidity and communicates the results to a computer. moves raw bits or words without placing many restrictions on vendors.developed with industrial applications in mind.The main reasons for the use of Modbus in the industrial environment are: Modbus has become a de facto standard communication protocol and is now a commonly available means of connecting industrial electronic devices. Modbus is a serial communications protocol originally published by Modicon (now Schneider Electric) in 1979 for use with its programmable logic controllers (PLCs). 6.2 RUT Modbus data to server configuration.4 Configuring Modbus serial slave device.
