Communication Between Twincat Controllers - Beckhoff KL6904 Operating Instructions Manual

The project is then started on the KL6904.
5.3.10.1 Project design limits of KL6904
TwinSAFE connections
TwinSAFE blocks
TwinSAFE groups
Standard PLC inputs
Standard PLC outputs
TwinSAFE connection
Only one TwinSAFE connection between two TwinSAFE terminals is possible.
5.3.11

Communication between TwinCAT controllers

The MASTER_MESSAGE and SLAVE_MESSAGE data types are used for communication between two or
more TwinCAT controllers via network variables.
Associated variables have to be created under Publisher and Subscriber on the communicating controllers.
During TwinSAFE communication one side acts as the master, the other one as the slave. This results in the
following data types:
TwinSAFE Master Publisher
TwinSAFE Master Subscriber
TwinSAFE Slave Publisher
TwinSAFE Slave Subscriber
The link with the via TwinSAFE logic terminal KL6904 is established with the following dialog:
Fig. 31: Link TwinSAFE logic terminal
The connection created must now be made known to the TwinSAFE logic terminal. This is done by marking
the TwinSAFE connection list and pressing the right mouse button.
KL6904
Max. 7 or 15 (see Inserting a KL6904 [} 31])
Max. 48
Max. 8
max. 24 bit
max. 24 bit
MASTER_MESSAGE
SLAVE_MESSAGE
SLAVE_MESSAGE
MASTER_MESSAGE
Version: 3.0.0
Operation
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