S&A Teyu CW-7500 Refrigeration industrial water chiller systems ndi 14000W kuzirala mphamvu yothandizira Modbus-485 kulankhulana protocol, amene angathe kuzindikira kulankhulana pakati pa laser dongosolo ndi angapo madzi ozizira kukwaniritsa ntchito ziwiri: kuyang'anira ntchito ya chillers ndi kusintha magawo a ozizira.