![]() ![]() You must therefore know a minimum of MODBUS to interface an RS485 device. While with RS232 many devices simply use text (ASCII) protocols, with RS485 most devices use the MODBUS protocol. The main particularity when using RS485 is in the format of the exchanged data. When the COMMAND CENTER communicates with the Analyzer, go to the VARIABLES. Open the COMMAND CENTER and initiate communication with the Analyzer. Modbus RTU Protocol over RS485 Communications The Modbus address is entered in variable N1 for the Analyzer. They function as listening/replying devices (slave, server) and can connect with any mastering (master, client) device that communicates using the Modbus protocol. Modbus TCP is supported over an Ethernet connection. ![]() Modbus RTU is supported over an RS-485 serial connection.
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