Lenze Drive Server Bus server S7 getting started - Manual (Page 56)

Busserver S7
L
117 Busserver S7 DE/EN 1.0
6.6.2 Program blocks used
The project folder Blocks contains the following program blocks:
Block Function
OB1 Organisation block (program cycle); used to call FC1
FC1 Siemens FC block DP_SEND
FC2 Siemens FC block DP_RECV
FC3 Function 3; used to call all other blocks
FB91 Function block FB DRIVE CPenables parameter access via OPC and from the PLC
FC90 Function FC Parameter for parameter data jobs from the PLC
FC93/FC94 Function for DP Process Data (3 words/2 words)
DB80 Data block DB OPC for data exchange between OPC and FB90
DB81 Data block DB S7PAR for data exchange between FC90 and FB90
DB30/31 Data blocks for data exchange between CPU and external communication processor (based on
UDT93)
DB90/100 Instance data blocks for FB91
SFC57/SFC58 System blocks for communication via PROFIBUS-DP
UDT90 -
UDT93 Universal data types for parameter data access to Lenze drive controllers
VAT4 Variables table for changing the example parameters
6.6.3 Symbolic variable names
The same symbolic variable names are used as in the previously described example project ”S7-400”.
( ^ 111)
We recommend the use of symbolic variable names for clarity. However, they are not compulsory.
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