Modbus refers to a serial communication standard that was developed by Modicon in the year 1979. It is put to use with programmable logic controllers. If it is talked about in layman terms it refers to a method by which information is transmitted between two electronic devices and over serial lines. The device that requests the information is Modbus Master and the devices that supply information are called Modbus Slaves. There is usually a standard network set up in Modbus. This comprises of a Master and 247 slaves. Every slave has a unique address and this range from 1 up to 247. The Master unit sends across information to the slave units.
Uses of Modbus
It is an open protocol method which means that manufacturers can use the protocol to build into different equipment and that can be done without having to pay royalties to the original developer. It is a communications protocol that is standard and is available for connecting different kinds of electronic devices. For that reason, for data acquisition it is a system that can come of use for connecting different applications and devices and gaining information or data in a central repository.
For instance, a system that measures humidity and temperature would communicate such results to a computer with such a protocol. Modbus comes of use when a supervisory unit is central to, a system such as a SCADA system. Here remote control units usually communicate with a supervisory component, whether it is to send across data or to receive the same. There are different versions of the Modbus protocol that exist and come of use such as Mosbus ASCII or Modbus RTU. If you are getting a SCADA system designed from scratch, this protocol method would come of use and its different versions.
Uses of Modbus
It is an open protocol method which means that manufacturers can use the protocol to build into different equipment and that can be done without having to pay royalties to the original developer. It is a communications protocol that is standard and is available for connecting different kinds of electronic devices. For that reason, for data acquisition it is a system that can come of use for connecting different applications and devices and gaining information or data in a central repository.
For instance, a system that measures humidity and temperature would communicate such results to a computer with such a protocol. Modbus comes of use when a supervisory unit is central to, a system such as a SCADA system. Here remote control units usually communicate with a supervisory component, whether it is to send across data or to receive the same. There are different versions of the Modbus protocol that exist and come of use such as Mosbus ASCII or Modbus RTU. If you are getting a SCADA system designed from scratch, this protocol method would come of use and its different versions.