public virtual void ExecuteCustomMessage_ReadHoldingRegisters() { CustomReadHoldingRegistersRequest request = new CustomReadHoldingRegistersRequest(3, SlaveAddress, 104, 2); CustomReadHoldingRegistersResponse response = Master.ExecuteCustomMessage <CustomReadHoldingRegistersResponse>(request); Assert.AreEqual(new ushort[] { 0, 0 }, response.Data); }