public void WriteMultipleRegisters() { ushort startAddress = 35; ushort[] valuesToWrite = new ushort[] { 1, 2, 3, 4, 5 }; Assert.AreNotEqual(valuesToWrite, _testDataStore.HoldingRegisters.Slice(startAddress - 1, valuesToWrite.Length).ToArray()); WriteMultipleRegistersResponse expectedResponse = new WriteMultipleRegistersResponse(1, startAddress, (ushort)valuesToWrite.Length); WriteMultipleRegistersResponse response = ModbusSlave.WriteMultipleRegisters(new WriteMultipleRegistersRequest(1, startAddress, new RegisterCollection(valuesToWrite)), _testDataStore, _testDataStore.HoldingRegisters); AssertModbusMessagePropertiesAreEqual(expectedResponse, response); }