I103USRDEF can be used, for example in mapping the INF numbers not supporteddirectly by specific function blocks, like: INF17, INF18, INF20 or INF35. Afterconnecting the appropriate signals to the I103USRDEF inputs, the user must also setthe InfNo_x values in the settings.GUID-391D4145-B7E6-4174-B3F7-753ADDA4D06F V1 ENFigure 234: IEC 60870-5-103I103USRDEF:114.25.2 Function blockIEC10000294-1-en.vsdI103USRDEFBLOCK^INPUT1^INPUT2^INPUT3^INPUT4^INPUT5^INPUT6^INPUT7^INPUT8IEC10000294 V1 ENFigure 235: I103USRDEF function block14.25.3 SignalsTable 429:I103USRDEF Input signalsName Type Default DescriptionBLOCK BOOLEAN 0 Block of status reportingINPUT1 BOOLEAN 0 Binary signal Input 1INPUT2 BOOLEAN 0 Binary signal input 2INPUT3 BOOLEAN 0 Binary signal input 3INPUT4 BOOLEAN 0 Binary signal input 4INPUT5 BOOLEAN 0 Binary signal input 5INPUT6 BOOLEAN 0 Binary signal input 6INPUT7 BOOLEAN 0 Binary signal input 7INPUT8 BOOLEAN 0 Binary signal input 8Section 14 1MRK 504 135-UEN AMonitoring522Technical manual