Danfoss VLT AutomationDrive FC 360 Programming Manual

Also see for VLT AutomationDrive FC 360: Quick guide Quick guide Quick guide Programming guide Design guide

Danfoss VLT AutomationDrive FC 360 Programming Manual Manual pdf 26 page image

5.5 Data Structure in the Acyclic TelegramsThe data structure for a write/read parameter requestconsists of 3 main blocks:• Header block.• Parameter block.• Data block.Arrange according to Table 5.1:Word number1 Header Request # Request ID2 Header Axis # Param.3 (Param. 1) Attribute # Elements4 (Param. 1) Parameter number5 (Param. 1) Subindex number6 (Param. 2) Attribute # Elements7 (Param. 2) Parameter number8 (Param. 2) Subindex number9 (Param. 3) Attribute # Elements10 (Param. 3) Parameter number11 (Param. 3) Subindex number...N (Data Param. 1) Format # ElementsN+1 (Data Param. 1) Data DataN (Data Param. 2) Format # ElementsN+1 (Data Param. 2) Data DataN (Data Param. 3) Format # ElementsN+1 (Data Param. 3) Data DataN+1 (Data Param. 3) Data DataN+1 (Data Param. 3) Data DataTable 5.1 Request Telegram5.6 HeaderRequest numberThe master uses request # to handle the response from theIO device. The IO device mirrors this number in itsresponse.Request ID1 = request parameter2 = change parameterAxisAlways leave this to 0 (zero).Only used in multi-axis system.Number of parametersNumber of parameters to read or write.5.7 Parameter BlockProvide the following 5 values for each parameter to read.AttributeAttribute to be read10 = Value20 = Description30 = TextNumber of elementsThe number of elements to read when parameter isindexed.AttributeRead attribute.Parameter numberThe number of the parameter to read.SubindexPointer to the index.5.8 Data BlockThe data block is only needed for write commands. Set upthe data block information for each parameter to write.FormatThe format of the information to write:2: Integer 8.3: Integer 16.4: Integer 32.5: Unsigned 8.6: Unsigned 16.7: Unsigned 32.9: Visible string.33: Normalized value 2 bytes.35: Bit sequence of 16 boolean variables.54: Time difference without date.Refer to the frequency converter’s programming guide for atable with parameter number, format, and other relevantinformation.DataThe actual value to transfer. The amount of data has to beexactly the size requested in the parameter block. If thesize differs, the request generates an error.On a successful transmission of a request command, themaster can read the response from the frequencyconverter. The response does look very much like therequest command. The response only consists of 2 blocks,the header and the data block.Acyclic Communication (DP-V... PROFINET24 Danfoss A/S © 04/2017 All rights reserved. MG06G10255