• The Challenge A baked goods contract manufacturer used a constant speed conveyor system to produce numerous products in varying pan sizes. Sensors along the conveyor detected pan size and reported the data to a PLC that controlled the line speed. The PLC would then adjust the line speed to control the bake time. But glitches in the RS-485 serial communications were causing under or over baking. The company needed a quick and economical way to improve quality control. But the conveyer system was nowhere near its end-of-life and it represented a huge capital investment. Replacement was out of the question. • The Solution B&B solved the problem with optically isolated RS-422/485 repeaters. The repeaters eliminated the communication glitches and the production line began to re

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