What is Modbus?

Modbus is a serial communications protocol that was originally published in 1979 for use with programmable logic controllers. Since then, it has become a de facto standard communication protocol for connecting industrial electronic devices. Modbus was developed with industrial applications in mind, is openly published and royalty free, is easy to deploy and maintain, and moves raw bits or words without placing many restrictions on the vendors.

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With respect to the usage, installation or assembly of any products described in this video, Galco Industrial Electronics, Inc., a Michigan corporation, encourages you to follow the requirements and/or guidelines of: i) the Occupational Safety and Health Act of 1970, Public Law 91-596, as amended, and all laws, rules and regulations implemented in relation thereto; ii) the National Electric Code®; and iii) NFPA 70E®. Any installation, assembly or work described in this video should be performed by a qualified licensed electrician.

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