Before clearing the scan list for a Unit with user-set remote I/O allocation, make sure that it is safefor the I/O area to change to a fixed allocation area. Not doing so may result in malfunction.Be sure to enable the scan list during actual operation. System errors may go undetected ifoperation is performed with the scan list disabled.Check the user program for proper execution before actually running it on the Unit. Not checkingthe program may result in an unexpected operation.