Basics communication
EL70x1 35Version: 4.4
Online/offline list
While working with the TwinCAT System Manager, a distinction has to be made whether the EtherCAT
device is "available", i.e. switched on and linked via EtherCAT and therefore online, or whether a
configuration is created offline without connected slaves.
In both cases a CoE list as shown in Fig. “’CoE online’ tab” is displayed. The connectivity is shown as offline/
online.
• If the slave is offline
◦ The offline list from the ESI file is displayed. In this case modifications are not meaningful or
possible.
◦ The configured status is shown under Identity.
◦ No firmware or hardware version is displayed, since these are features of the physical device.
◦ Offline is shown in red.
Fig.18: Offline list
• If the slave is online
◦ The actual current slave list is read. This may take several seconds, depending on the size
and cycle time.
◦ The actual identity is displayed
◦ The firmware and hardware version of the equipment according to the electronic information is
displayed
◦ Online is shown in green.
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