Interface BrickletRS485.ModbusSlaveReadHoldingRegistersRequestListener

  • All Superinterfaces:
    DeviceListener, java.util.EventListener, TinkerforgeListener
    Enclosing class:
    BrickletRS485

    public static interface BrickletRS485.ModbusSlaveReadHoldingRegistersRequestListener
    extends DeviceListener
    This listener is called only in Modbus slave mode when the slave receives a valid request from a Modbus master to read holding registers. The parameters are request ID of the request, the number of the first holding register to be read and the number of holding registers to be read as received by the request. The number of the first holding register is called starting address for backwards compatibility reasons. It is not an address, but instead a holding register number in the range of 1 to 65536. The prefix digit 4 (for holding register) is omitted. To send a response of this request use BrickletRS485.modbusSlaveAnswerReadHoldingRegistersRequest(int, int[]).
    • Method Detail

      • modbusSlaveReadHoldingRegistersRequest

        void modbusSlaveReadHoldingRegistersRequest​(int requestID,
                                                    long startingAddress,
                                                    int count)