Danfoss VLT AutomationDrive FC 360 Programming Manual

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4 Control4.1 PPO TypesThe PROFINET profile for frequency converters specifies anumber of standard telegrams and provides space forvendor-specific telegrams. The PROFIdrive profile forfrequency converters is suitable for data exchangebetween a process controller (for example PLC) and afrequency converter. All telegrams are defined for cyclicdata transfer of high-priority data.Pure process data objectsPPO types 3, 4, 6, 7, and 8 are pure process data objectsfor applications requiring no cyclic parameter access. ThePLC sends out process control data, and the frequencyconverter then responds with a PPO of the same length,containing process status data.Illustration 4.1 shows the available PPO types:• PCD 1: The first 2 bytes of the process data area(PCD 1) comprise a fixed part present in all PPOtypes.• PCD 2: The next 2 bytes are fixed for PCD writeentries (see parameter 9-15 PCD Write Configu-ration [1]), but configurable for PCD read entries(see parameter 9-16 PCD Read Configuration [1]).• PCD 3–10: In the remaining bytes, the processdata can be parameterized with process signals,see parameter 9-23 Parameters for Signals.The setting in parameter 9-15 PCD Write Configurationdetermines the signals for transmission (request) from themaster to the frequency converter.The setting in parameter 9-16 PCD Read Configurationdetermines the signals for transmission (response) from thefrequency converter to the master.Select the PPO type in the master configuration. Theselection is automatically recorded in the frequencyconverter. No manual setting of PPO types in thefrequency converter is required. Read the current PPO typein parameter 9-22 Telegram Selection. The setting [1]Standard telegram 1 is equivalent to PPO type 3.In addition, all PPO types can be set up as word-consistentor module-consistent. The process data area can be word-consistent or module-consistent, whereas the parameterchannel must always be module-consistent.• Word-consistent data is transmitted as individual,independent words between the PLC and thefrequency converter.• Module-consistent data is transmitted as sets ofinterrelated words transferred simultaneouslybetween the PLC and the frequency converter.Standard telegram1PPO 6PPO 7PPO 8Danfoss telegram(The old PPO type 3)CTW/STW REF/MAV PCD 2Read/WritePCD 3Read/WritePCD 4Read/WritePCD 5Read/WritePPO 4CTW/STW REF/MAVPCD 2Read/WritePCD 3Read/WriteCTW/STW REF/MAVPCD 2Read/WritePCD 3Read/WritePCD 4Read/WritePCD 5Read/WritePCD 6Read/WritePCD 7Read/WritePCD 8Read/WritePCD 9Read/WriteCTW/STW REF/MAV PCD 2Read/WritePCD 3Read/WritePCD 4Read/WritePCD 5Read/WritePCD 6Read/WritePCD 7Read/WriteCTW/STW REF/MAVCTW/STW REF/MAVPPO 3130BE941.10Illustration 4.1 Available PPO TypesControl PROFINET10 Danfoss A/S © 04/2017 All rights reserved. MG06G10244