I Have WAVE 2 - Modular Drive System from reel company www.reel.it and i need to control it via rs485 from LG PLC K7M-DR60U ..... In the Manual http://www.reel.it/files/trat_eng/10_Comm_Protocol.pdf The Protocol Have CRC Check In the last 2 bytes(CRC16) I try to calculate it but i Get Different results for the samples in manual ..... so if any one Can help me i will be thankful . Thank you and Best Regards