Communication Between Twincat Controllers; Fig. 43 Link With The Twinsafe Logic Terminal El6900; Fig. 44 Make Known The Connection Created To The Twinsafe Logic Terminal - Beckhoff EL6900 Operating Instructions Manual

TwinSAFE connection
Only one TwinSAFE connection between two TwinSAFE terminals is possible. Between
two EL6900 logic terminals a connection can be set up that may contain up to 14 bytes
Note
safe user data.
4.4.14

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 TwinSAFE logic terminal EL6900 is established with the following dialog.
Fig. 43: Link with the TwinSAFE logic terminal EL6900
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.
Fig. 44: Make known the connection created to the TwinSAFE logic terminal
EL6900
MASTER_MESSAGE
SLAVE_MESSAGE
SLAVE_MESSAGE
MASTER_MESSAGE
Version: 2.2.0
Operation
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