Lenze DDS Function library 8200 Drive - Manual (Page 25)

Function library Lenze8200Drive.lib
Functions/function blocks
3.3 L_8200DataControl − Send/receive process data
3−13
L
Lenze8200Drive.lib EN 1.0
Process data exchange
If the input bEnable is set to TRUE, the FB L_8200DataControl starts to exchange process data
·
The data are exchanged via the identifiers of the process data object CAN2_IO which consist
of the basic identifier and the node address of the frequency inverter selected at the input
byNodeAdr:
Identifier + Basis Identifier ) node address of frequency invertor
Basic identifier
dec hex
CAN2_IO (event or time−controlled process data)
CAN2_IN 640 280
CAN2_OUT 641 281
·
If a FALSE−TRUE transition occurs at the input bResetNode, the frequency inverter with the
node address byNodeAdr accepts the data which are relevant for communication and
changes to "Operational".
·
The cycle time tCycleTime is used to send the data to the frequency inverter.
Tip!
Process data transfer is only possible if the node address is correct and the frequency inverter is in
the state "Operational".
·
Therefore, the input bResetNode should always be set to TRUE.
Assignment of send and receive bytes
Send byte Assignment Receive byte Assignment
1 + 2 Control word wControlData 1 + 2 Status word wStatusData
3 + 4 Setpoint nNSetN1_a 3 + 4 Actual value nMCtrl_Nout_Slip
5 + 6 a
min
boost wBoostVoltage 5 + 6 freely assignable via wOutputData3
7 + 8 freely assignable via wInputData 7 + 8 freely assignable via wOutputData4