If an error has occurred during the read access to a parameter, the response ID = 81his set. Furthermore, the format = 44h (error) is set for this parameter value and the errorvalue is set as 16-bit value as follows:Value Description11h Timeout on access to the parameter or drive converter busy14h Drive converter busy (*4)00h Invalid parameter address or password17h Data invalid65h Error in internal communication (BCC error)66h Error in internal communication (invalid service or invalid operation)67h Invalid password68h Error in internal communication (invalid telegram)69h Error in internal communication (parity error)03h Invalid parameter set (subindex)6Bh Error in internal communication (invalid operation) (*5)(*4) The error code „drive converter busy“ was changed in the software versionV3.1 from 11h to 14h.(*5) The error code „invalid operation“ was changed in the software versionV3.1 from 66h to 6Bh.(to *3) Free from error requests are listed in a negative Write-response (Re-sponse-ID = 82h) with format = 40h (Zeror) and No of Values = 0.4.2.1 Parameter addressing with 16-bit PNU plus 16 bit Subindex (PROFIdrive)1. PNU Last PNU Description0000h FFFFh Parameters of the drive converter control and operator withPNU = KEB-Parameter-Address (*1). KEB uses the subin-dex for set-addressing. Parameters of the operator alwaysstart at PNU = XX80h(*1) The KEB parameter address can be found here or in [5]. It is also possible todisplay the KEB parameter address in the KEB start-up software COMBIVIS(more information see annex).19PROFINET AcycLIc DATA (PARAMETER cHANNEL) AccORDING TO PROFIDRIVE