When communicating with an FWA via Modbus, the log acts exclusively as a secondary/slave. In order for the telecontrol system to be able to read and write the values agreed via the data point list, both parties must know in which Modbus registers of the Amperecloud Log the values are available. The registers can be specified either by the operator of the FWA or by Amperecloud; the other party must program their device accordingly. The register list therefore indicates which value can be accessed via which register. Almost all variables that can be read or controlled by the Amperecloud log can be individually assigned to a Modbus register.
Example of a Modbus register list with additional data for the connection via Modbus RTU or TCP
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