ParametersParameter Declaration Data type Memory block DescriptionIOID INPUT BYTE I, Q, M, D, L,constantArea identification:54h = peripheral input (PI)55h = peripheral output (PQ)LADDR INPUT WORD I, Q, M, D, L,constantA logical addressRET_VAL OUTPUT INT I, Q, M, D, L The return value contains an error code if anerror is detected when the function is being pro-cessed.PEADDR OUTPUT ANY I, Q, M, D, L Field for the PI-addresses, field elements mustbe of data type WORD.PECOUNT OUTPUT INT I, Q, M, D, L Number of returned PI addressesPAADDR OUTPUT ANY I, Q, M, D, L Field for PQ addresses, field elements must beof data type WORD.PACOUNT OUTPUT INT I, Q, M, D, L Number of returned PQ addressesThe return value contains an error code if an error is detected when the function is beingprocessed.Value Description0000h No error has occurred.8090h The specified logical address is not valid or illegal value for parameter IOID.80A0h Error in output parameter PEADDR:data type of the field elements is not WORD.80A1h Error in output parameter PAADDR:data type of the field elements is not WORD.80A2h Error in output parameter PEADDR:the specified field could not accommodate all the logical addresses.80A3h Error in output parameter PAADDR:the specified field could not accommodate all the logical addresses.14.1.39 SFC 51 - RDSYSST - Read system status list SSLWith the SFC 51 RDSYSST (read system status) a partial list respectively an extract of apartial list of the SSL (system status list) may be requested. Here with the parametersSSL_ID and INDEX the objects to be read are defined.The INDEX is not always necessary. It is used to define an object within a partial list.By setting REQ the query is started. As soon as BUSY = 0 is reported, the data arelocated in the target area DR.IInformation about the SSL may be found in Chapter "System status list SSL".RET_VAL (Return value)DescriptionVIPA SPEED7 Integrated StandardSystem Functions > SFC 51 - RDSYSST - Read system status list SSLHB00 | OPL_SP7 | Operation list | en | 18-30 685
