Settings In Twincat; Fig. 10 Representation Of The El9930 In Twincat - Beckhoff EL9930 Operating Instructions Manual

Profisafe segment end terminal

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Operation

4.2.5

Settings in TwinCAT

Scan or create the IO configuration

Each EL9930 registers itself twice in the configuration in TwinCAT:

• once as EL9930-0000 (primary, shown in figure as EL9930)

• once as EL9930-0001 (secondary).

The reason for this is that both the forward and backward direction of the EtherCAT telegram have to be

regarded for the ending of the PROFIsafe segment on account of the functional principle of EtherCAT. The

representation EL9930-0001 (secondary) is a virtual node in the I/O configuration (no real component). Both

instances must be placed correctly so that the PROFIsafe segment is limited in accordance with the

PROFIsafe policy (see illustration below). The primary and secondary instance must be at the same level in

the I/O tree, while the elements between these instances must be configured as a subtree of the primary

instance.

By using the scan function in TwinCAT 3, you can ensure that the integration of the two instances of each

EL9930 in the I/O tree is executed correctly.

Fig. 10: Representation of the EL9930 in TwinCAT

Alias Device

To connect the EL6910 with a PROFIsafe device, a corresponding Alias Device must be created and the

desired telegram length configured.

Version: 2.0.0

EL9930

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