Ethernet/IP (Ethernet/Industrial Protocol) • 205Object modelWAGO-I/O-SYSTEM 750ETHERNET TCP/IPInstance 1..255 (1. to 255. Input variable)Attribute ID Access Name Data type Description Default value1 Set Fb_In_Var USINT Fieldbus Input variable of thePLC 0This instance corresponds to the PFC’s input variables located at address%IB2552-%IB2807 in a WAGO-I/O-PRO application.Common ServicesService availableService code Class Instance Service Name Description0E hex yes yes Get_Attribute_Single Supplies contents of the appropriate attribute10 hex no yes Set_Attribute_Single Modifies an attribute value7.3.2.22 Input fieldbus variable USINT Extended 1 (A1 hex)Same as the Input Fieldbus Variable USINT Class (A0 hex ), however thiscontains the PLC input variables 256..510.This instance corresponds to the PFC’s input variables located at address%IB2808-%IB3061 in a WAGO-I/O-PRO application.7.3.2.23 Input fieldbus variable USINT Extended 2 (A2 hex)Same as the Input Fieldbus Variable USINT Class (A0 hex ), however thiscontains the PLC input variables 511..512.This instance corresponds to the PFC’s input variables located at address%IB3062-%IB3063 in a WAGO-I/O-PRO application.Class attribute max. Instance = 27.3.2.24 Output fieldbus variable USINT (A3 hex)ClassAttribute ID Access Name Data type Description Default value1 Get Revision UINT Revision of this object 1 (0x0001)2 Get MaxInstanceUINT Max. number of instances 255 (0x0FF)Instance 1..255 (1. to 255. Output variable)Attribute ID Access Name Data type Description Default value1 Get Fb_Out_Var USINT Fieldbus Output variable ofthe PLC 0This instance corresponds to the PFC’s output variables located at address%QB2552-%QB2807 in a WAGO-I/O-PRO application.