Lenze Drive Server Bus server S7 getting started - Manual (Page 58)

Busserver S7
L
119 Busserver S7 DE/EN 1.0
6.6.5 Process data transfer
FC3, 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 94
FirstDriveDW
:=8
DriveSend_DB :=”DriveSend_DB”
DriveRecv_DB :=”DriveRecv_DB”
Enable :=”Enable”
QSP :=”QSP”
Reset :=”Reset”
Setpoint1 :=”Setpoint1”
ControlWord :=”ControlWord”
RDY :=”RDY”
TRIP :=”TRIP”
ActualValue1 :=”ActualValue1”
StatusWord :=”StatusWord”
• The parameter FirstDriveDW defines the byte position of the first data word of the connected
drive controller.
– For each drive controller, 8 data words are reserved in the data blocks DriveSend_DB and /
or DriveRecv_DB. The first 4 data words are needed for parameter access and the last 4
data words for process data access.
– The drive controllers must have successive I/O addresses.
• 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 FC94.
• The outputs RDY and TRIP provide information about the controller status.
• ActualValue1 is the value read out.
Tip!
Detailed information about the parameters of FC94 can be found in chapter 6.3.7. ( ^ 107)
Use function block FC93 to transmit three process data words. ( ^ 106)
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