The Modbus communications between the controller and the sensors were intermittently failing due to various installation and implementation faults:
1. Earthing and Shielding
Within any fieldbus communication installation, one of the requirements to ensure uninterrupted operation is to implement adequate grounding and shielding techniques. Effective grounding and Shielding help to prevent electrostatic and electromagnetic pickup, which can lead to failed communications.
Some of the shielding and grounding requirements for a Modbus RS4…