please suggest regarding ELAU pacdrives. We have Elau make pacdrive controller C200/10/1/1/1/00 Connected to two MC-4 pacdrives, one is MC-4/11/22/400 and the other one MC-4/11/03/400. We are encountering faults, on C200 the ERR led is flashing, and the next unit MC-4/11/22/400 unit the ERR led is ON and Stable and Buserr Led is also On and for the MC-4/11/03/400 unit only the buserr led is ON and steady. I am suspecting the MC-4/11/22/400 and we want to replace it. I would like to know whether it is plug and play type or need to configure the pacdrive. SecondLY if we need replace the C200 which is having flash memory, do we need any programming for the C200 or just insert the flash in the new C200 and start. please inform.