Software and System Products Division
APPLICATION NOTE
TITLE
PRODUCT:
Profibus-DP Function Block for Siemens S7 PLC
UD with Profibus-DP Interface Mentor II with Profibus-DP interface Commander SE with Profibus-DP interface
ISSUED:
November
3.0
AUTHOR:
Kevin Brown
REVISION:
SUMMARY
A function block for the Siemens S7 PLC has been produced that will control cyclic and non-cyclic data communications between the PLC and Control Techniques Drive on the Profibus-DP network.
HARDWARE REQUIREMENTS
Siemens Simatic S7 PLC with 3xx CPU Simatic S7 PC adaptor
SOFTWARE REQUIREMENTS
Simatic S7 Manager V3.0 or later
DETAILED INFORMATION
The FB block is designed to provide simple control of non-cyclic data. It also has the capability of controlling cyclic data as well if required. It should also be used if the cyclic data format has consistency. The terms “IN data” and “OUT data” refer to the data as seen by the PLC. Therefore, ”OUT data” goes ...