Lenze Drive Server Bus server S7 getting started - Manual (Page 52)

Busserver S7
L
113 Busserver S7 DE/EN 1.0
6.5.6 Parameter data access
The FB90 (FB DRIVE) enables accessing parameter data both via OPC and from the PLC. The
changeover between these two communication channels takes place automatically.
• One instance each of FB90 is to be called for each drive (DP Slave). In addition, one instance
data block for each drive is required for variables storage.
• Parameter data jobs via OPC are saved in DB OPC.
• Parameter data jobs from the PLC are saved in DB S7PAR.
FC4, network 2
L “StatusWord” //disconnected
L 0 //drive controllers
==I //are
SPB NEXT //skipped.
CALL FB 90 , DB100
Tag := //STRING
PB_Address :=B#16#9 //BYTE, B#16#x
EA_Address :=1000 //I-address, decimal
DriveServer_DB :=”DB-OPC-Server” //DBx; e.g. DB80
DrivePar_DB :=”S7-Parameter” //DBx; e.g. DB81
TimerNr :=”TimeOutTimer_OPC” //TIMER
TimeOut :=S5T#1S //TIME
Busy :=”BUSY” //OUT, BYTE
NEXT : NOP 0
• Use the StatusWord to check if the drive controller is switched on ( StatusWord <> 0). If it is
not, the call of FB90 is skipped.
• In the above example, FB90 uses the instance data block DB100 for variables storage.
• The input Tag is not assigned.
• The PROFIBUS device address and the start address of the parameter channel are indicated as
shown above.
• In the above example, both parameter data blocks ( DB80, DB81) are used.
• The output byte Busy provides information about the communication status.
Tip!
Detailed information about the parameters of FB90 can be found in chapter 6.3.1. ( ^ 100)
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