Using The Integrated Twinsafe Logic Functions; Project Design Limits For The El2912; Fig. 6 Delete Project Data - Beckhoff TwinSAFE EL2912 Operating Instructions Manual

Terminal with 2 digital fail-safe outputs

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3.8

Using the integrated TwinSAFE Logic functions

On delivery, the EL2912 behaves like a safe TwinSAFE I/O slave, which can be used as an alias device

within a TwinSAFE Logic, e.g. EL6910.

Alternatively, the local logic function of the EL2912 can be used. To this end please create a TwinSAFE

project in the Safety Editor and select the EL2912 as the target system. Further information on creating a

project can be found in the EL6910 documentation and the description of the function blocks under http://

www.beckhoff.de/english/download/twinsafe.htm.

In order to be able to use the EL2912 again as a safe TwinSAFE I/O slave, please delete the logic, the

mapping and the parameter data on the EtherCAT Terminal and switch the voltage off and on again.

Fig. 6: Delete project data

3.9

Project design limits

The maximum project design size of the EL2912 is limited by the available memory. This is man-

aged dynamically. The values specified in the following table are therefore only guide values and

may differ from the actual values, depending on the safety project.

Execution time of the logic function

Compared to the EL6910 with an identical logic program, the execution time will be typically longer as the

safe I/O signals have to be processed in addition. Accordingly this also affects the processing of the I/O sig-

nals, as they can only be evaluated less frequently as the size of the project increases.

EL2912

NOTE

Version: 1.0.0

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