3 project planning concept, 1 parameterisation and process data blocks, Project planning concept – Lenze Function library LenzeIO1000Drv User Manual
Page 8: Parameterisation and process data blocks, Function library "lenzeio1000drv, 3project planning concept
Function library "LenzeIo1000Drv"
Project planning concept
Parameterisation and process data blocks
8
L
DMS 1.0 EN - 07/2011 - TD05
3
Project planning concept
The user is provided with suitable function blocks by the "LenzeIo1000Drvlib" library to
enable support of the decentralised I/O system through Lenze PLC products These function
blocks are implemented in an IEC 61131 program and serve both for parameterising the I/
O system and for process data processing. They provide digital and analog input and
output information of the I/O system. Configurations of the user via user codes are not
required.
3.1
Parameterisation and process data blocks
The "LenzeIo1000Drvlib" library contains two types of function blocks:
1. Parameterisation blocks
2. Process data blocks
Parameterisation blocks
Parameterisation blocks allow the modification of index information in the decentralised
I/O system and the transmission of specified data. These data are transmitted only once to
the I/O system during the initialisation phase..
The parameterisation blocks for modules and monitoring functions are required for
individual parameter setting of analog modules, communication monitoring, etc.
The parameterisation blocks communication settings (
and
) are mandatory for data exchange between PLC and I/O system.
Process data blocks
Process data blocks are required for transmitting and receiving I/O data between PLC and
I/O system. The process data blocks
and
evaluate and process the current process data information of the inputs of the I/O system
in the PLC program. Information and data of the PLC control can be transmitted to the
process via the output modules of the I/O system.
Note!
In case of parameterisation blocks with the same bus node address at the
byNodeAdr input, the bExecute inputs must not be set to TRUE at the same time.
The parameter setting of the modules and the communication settings of a bus
coupler have to be started successively.