Lenze Drive Server Bus server S7 getting started - Manual (Page 51)

Busserver S7
L
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 data 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 can 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 status word conform to the DRIVECOM specification.
• The DRIVECOM status machine has already been implemented in FC92.
• The outputs RDY and TRIP provide information about the controller status.
• ActualValue1 is the value read out.
Tip!
Detailed information about the parameters of FC92 can be found in chapter 6.3.5. ( ^ 105)
Use function block FC91 to transmit three process data words. ( ^ 104)
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