Register No. Name Description R WDT90177 No. of transmission errorsDT90178 No. of procedure errorsDT90179 No. of duplicate master unitsDT90180to DT90218 Reserved for system -Register No. Name Description R WDT90219 Unit No. switch from DT90220to DT90251 0: Unit Nos. 1 to 8; 1: Unit Nos. 9 to 16 ●DT90220PLC linkunit no. 1 or 9Systemregisters 40and 41System register settings related to the PLC linkfunction of each unit number are stored as below.< Example >DT90219 is 0When standard settings are applied to Systemregister 46 of a master unit, the values of the masterunit are copied to 46 and 47 on the left.When reverse settings are applied to Systemregister 46 of a master unit, 40 to 45 and 47 (portionthat corresponds to the master unit on the left) areapplied to 50 to 55 and 57, and 46 is directlyspecified.Received values are corrected and applied to 40 to45 (portion that corresponds to another unit), while46 and 57 of the master unit are applied to 46 and47.●DT90221Systemregisters 42and 43DT90222Systemregisters 44and 45DT90223Systemregisters 46and 47DT90224PLC linkunit no. 2 or10Systemregisters 40and 41DT90225Systemregisters 42and 43DT90226Systemregisters 44and 45DT90227Systemregisters 46and 47DT90228PLC linkunit no. 3 or11Systemregisters 40and 41DT90229Systemregisters 42and 43DT90230Systemregisters 44and 45DT90231Systemregisters 46and 47DT90232PLC linkunit no. 4 or12Systemregisters 40and 4110.4 List of Special Data Registers (COM Communication)WUME-FP0HCOM-06 10-23