Modbus protocol for C# , used for RFID project , which handled data over network. example: public static string ParseModbusResponsePacket(byte[] packet) { try { int dataLength = packet[2] - 6; byte[] dataByte = new byte[dataLength]; Array.Copy(packet, 9, dataByte, 0, dataLength); string data = BinaryToString(dataByte); return data; } catch (Exception ex)