Difference Between Modbus And Profibus Communication Pdf

difference between modbus and profibus communication pdf

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Modbus is a communication protocol developed by Modicon systems. In simple terms, it is a method used for transmitting information over serial lines between electronic devices. The device requesting the information is called the Modbus Master and the devices supplying information are Modbus Slaves.

Compare Modbus, Fieldbus, and Profibus

Ithinktheyarecommunication protocolsbutwhatisthebasicdifference. They are two different communications protocols. If you want a rough analogy, it's like two different languages. Profibus is speaking German and Modbus is speaking English. Both languages work, but the two speakers can't communicate.

Ithinktheyarecommunication protocolsbutwhatisthebasicdifference. They are two different communications protocols. If you want a rough analogy, it's like two different languages. Profibus is speaking German and Modbus is speaking English. Both languages work, but the two speakers can't communicate. Profibus has certain protocol features that let certain versions of it operate in multi-master mode on RS, while Modbus could be only single master.

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14 Frequently Asked Modbus Questions

Modbus is a granddaddy of industrial communication protocols. Modbus is Modicon plus fieldbus. Modbus, a serial communication protocol developed by Modicon in It is used over serial and Ethernet cable. It is easy to implement and also easy to use. The term Modbus typically refers to one of three variants. This is used in serial communication.

We get this question fairly often. But generally, they are very different. And those cables use the standard DB9 or M12 connectors. And the slaves can be a wide array of devices: drives, motors, IOs, sensors, field devices, robots, actuators, and more. This approach saves costs by the omission of additional hardware and cabling. Also, it saves engineering time as it streamlines network installation, maintenance, and troubleshooting. When installing a PROFIBUS network, users link each device to the next in a process commonly referred to as daisy-chaining, resulting in a line topology.


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Modbus is a data communications protocol originally published by Modicon now Schneider Electric in for use with its programmable logic controllers PLCs. Modbus has become a de facto standard communication protocol and is now a commonly available means of connecting industrial electronic devices. Modbus is popular in industrial environments because it is openly published and royalty-free. It was developed for industrial applications, is relatively easy to deploy and maintain compared to other standards, and places few restrictions - other than the datagram packet size - on the format of the data to be transmitted. The Modbus protocol uses character serial communication lines , Ethernet , or the Internet protocol suite as a transport layer.

Modbus is a granddaddy of industrial communication protocols. Modbus is Modicon plus fieldbus. Modbus, a serial communication protocol developed by Modicon in

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