Implementation of Modbus C Library using Go Language

Abstract

1.1Modbus Protocol Various Programmable-Logic Units(PLUs) and devices can interact and communicate with each other on different network setups. Mod-bus is an open source protocol which different PLC manufacturers can use in their machines and devices depending on the purpose of the device. It was published for the first time by Schneider-Electric. This protocol is used in a number of systems as a standard protocol because of its wide popularity and usage. We can use it on Serial as well as Ethernet Electrical Interfaces. Devices also use Modbus-Plus on MAP as well as other networks like RS-232, RS-485, and USB, respectively. So, basically, it is a common language which is being conveyed or spoken between 2 or more devices so that the required task is done and the desired output is fetched. For the communication, Mod-Bus defines a particular format and message structure which is used to understand the contents of the message being sent and the working of the interface between the machines. The layout is almost same for both the Master-Sender of the signal or message and the devices which are on the receiving end of the signal. The maximum devices that can be connected on a single network through Mod-Bus is limited to 247 only. So Mod-Bus does have its own set of limitations when it comes to connection on a single N/W.

1.1Modbus Protocol Various Programmable-Logic Units(PLUs) and devices can interact and communicate with each other on different network setups. Mod-bus is an open source protocol which different PLC manufacturers can use in their machines and devices depending on the purpose of the device. It was published for the first time by Schneider-Electric. This protocol is used in a number of systems as a standard protocol because of its wide popularity and usage. We can use it on Serial as well as Ethernet Electrical Interfaces. Devices also use Modbus-Plus on MAP as well as other networks like RS-232, RS-485, and USB, respectively. So, basically, it is a common language which is being conveyed or spoken between 2 or more devices so that the required task is done and the desired output is fetched. For the communication, Mod-Bus defines a particular format and message structure which is used to understand the contents of the message being sent and the working of the interface between the machines. The layout is almost same for both the Master-Sender of the signal or message and the devices which are on the receiving end of the signal. The maximum devices that can be connected on a single network through Mod-Bus is limited to 247 only. So Mod-Bus does have its own set of limitations when it comes to connection on a single N/W.