Lenze Drive Server Bus server S7 getting started Bedienungsanleitung PDF herunterladen (Seite 59)

Busserv er S7

120 Busserver S7 DE/EN 1.0

6.6.6 Parameter data access

The FB91 (FB DRIVE CP1) enables a ccess parameter data both via OPC and from the PLC. The

changeover between these two communication channels takes place automatically. The block works

in the same way as FB90.

• One instanc e each of FB91 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 sa ved in DB S7PAR.

FC3, network 2

L “StatusWord”

L 0

==I

SPB NEXT

CALL FB 91 , DB100

Tag :=

PB_Address :=B#16#9

FirstDriveDW :=0

DriveSend_DB :=”DriveSend_DB”

DriveRecv_DB :=”DriveRecv_DB”

DriveServer_DB :=”DB-OPC-Server”

DrivePar_DB :=”S7-Parameter”

TimerNr :=”TimeOutTimer_OPC”

TimeOut :=S5T#1S

Busy :=”BUSY”

NEXT: NOP 0

• Use the StatusWord to check if the drive controller is switched on (StatusWord <> 0). If it is not,

the call of FB91 is skipped.

• In the above example, FB91 uses the instance data blo ck DB100 for variables storage.

• The input Tag is not assigned.

• The PROFIBUS device address and the data blocks for data exchange with the communication

processor and the byte offset are indicated as sho wn above.

• In the above example, the da ta blocks DB80 (”DB-OPC-Server”) and DB81 (”S7-Parameter”)

are used for DB OPC and DB S7PAR.

• The output byte Busy provides information about the communication status.

Tip!

Detailed information about the parameters of FB91 can be found in cha pter 6.3.2. (^ 101)

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Lenze Drive Server Bus server S7 getting started Bedienungsanleitung Seite 59