72 Start-upThe start sequence for the parameter example above is givenbelow.Control word:• Reset the fieldbus communication fault (if active).• 7Eh (126 decimal) → SWITCH ON DISABLED• 7Fh (127 decimal) → OPERATION ENABLEDABB Drives communication profile with parameter-configured PDO mappingThis example shows how to configure a speed control applicationthat uses the ABB drives profile.The start/stop commands and references are according to the ABBDrives profile. (For more information, see section ABB Drivescommunication profile on page 100.)Reference 1 (REF1) value ±20000 (decimal) corresponds to thereference set with parameter 19.01 (Speed scaling) in the forwardand reverse directions.The minimum and maximum 16-bit integer values that can begiven through the fieldbus are -32768 and 32767 respectively.12.03 Ext1 ctrl mode Speed Selects the speed control modefor external control locationEXT1.21.01 Speed ref1 sel AI1 scaled 2)(Parameter 02.05)Analog input as the source forreference 11) Automatically detected2) ExamplePDO Word 1 Word 2 LengthRx PDO1 6040hControl word6042hTarget velocity32 bitsTx PDO1 6041hStatus word6044hvl control effort32 bitsDrive parameter Setting for ACS850drivesDescription
