Lenze Drive Server Bus server S7 getting started Uživatelský manuál stáhnout pdf (Strana 51)

Busserv er S7

112 Busserver S7 DE/EN 1.0

6.5.4 OB1/FC4

With OB1, only the function FC4 is called, in which all other blocks are called.

6.5.5 Process data transfer

FC4, network 1

The following call is used to transmit two process data words (2PZD).

• Process data word 1 is always the DRIVECOM control word.

• Process da ta word 2 can be freely selected.

CALL FC 92 //FC92, 2 PZD

EA_Address :=1008 //I-address, decimal

Enable :=”Enable” //BOOL

QSP :=”QSP” //BOOL

Reset :=”Reset” //BOOL

Setpoint1 :=”Setpoint1” //INT, decimal

ControlWord :=”ControlWord” //WORD, control word

RDY :=”RDY” //OUT, BOOL

TRIP :=”TRIP” //OUT, BOOL

ActualValue1 :=”ActualValue1” //OUT, INT

StatusWord :=”StatusWord” //OUT, status word

• The start address for the process data channel c an be obtained from the hardware

configuration. (here: 1008)

• The inputs Enable, QSP and Reset are set to enable the controller:

– Enable =TRUE

– QSP = FALSE

– Reset = FALSE

• The second process data word is assigned to the setpoint input.

• Control word and sta tus word conform to the DRIVECOM spec ification.

• The DRIVECOM status machine has already been implemented in FC92.

• The outputs RDY and TRI P provide information about the controller status.

• ActualValue1 is the value read out.

Tip!

Detailed information about the parameters of FC92 can be found in cha pter 6.3.5. (^ 105)

Use function block FC91 to transmit three process data words. (^ 104)

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Lenze Drive Server Bus server S7 getting started Uživatelský manuál Strana 51