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I intend to make an Allen Bradley 5/20 PLC communicate with a Yokogawa Centum CS DCS. Protocol is RS 485 Modbus with minimum 19.2K baud rate. The transmission distance is about 500 meters, well within the range of RS 485. However considering the noisy plant environment Yokogawa recommends line drivers after every 100 meters in case of copper cable transmission. The solution is not practical for a hazardous area environment.
Without using fibreoptics or modems, are there any other direct line drivers available which we can use panel to panel (without cable breaks) and which ensure clean noise free transmission?
Without using fibreoptics or modems, are there any other direct line drivers available which we can use panel to panel (without cable breaks) and which ensure clean noise free transmission?