Coe Overview; General Access To Online Coe Values; Fig. 17 Example: Double Click The Coe Object Pai-Settings, Index Interface Of Channel 1 Of An Elm3Xxx Terminal - Beckhoff EPP3504-0023 Short Manual

Commissioning
4.2

CoE overview

4.2.1

General access to online CoE values

Many functionally critical parameters of the EtherCAT Terminals/ Box‑Modules are managed online in the so-
called CoE directory in the device. Under certain circumstances, read or write access is to be made to
individual or several entries in the active device during commissioning. That is possible:
• via the OnlineView in TwinCAT 3,
• via a PLC read/write access via ADS and
• via the TwinCAT TF6010 ADS Monitor
OnlineView in TwinCAT 3
The easiest way is the online access in TwinCAT2/3: double-clicking the index/subindex opens an editor
window and a value can be changed in decimal/hexadecimal and/or copied and - depending on the type -
also written at runtime. Note that the EtherCAT fieldbus is active, the device is addressable and "OnlineData"
is visible. Only individual values can be accessed, a so-called CompleteAccess is not possible.
Fig. 17: Example: double click the CoE object PAI-Settings, Index Interface of channel 1 of an ELM3xxx
terminal
PLC access
If values are to be changed or read specifically at application runtime, function blocks (FBs) can be used for
CoE access to the TwinCAT TC2_EtherCAT.lib. See also the sample programs in this documentation. Single
access and CompleteAccess are possible.
60 Version: 1.2 EPP3504-0023