
Commissioning
6.1.4
Online configuration creation ‘scanning’ (master: TwinCAT 2.x)
Distinction between Online and Offline
Distinction between Online and Offline
The distinction between online and offline refers to the presence of the actual I/O environment (drives,
terminals). If the configuration is to be prepared in advance of the system configuration as a programming
system, e.g. on a laptop, this is only possible in “Offline configuration” mode. In this case all components
have to be entered manually in the configuration, e.g. based on the electrical design.
If the designed control system is already connected to the EtherCAT system and all components are
energised and the infrastructure is ready for operation, the TwinCAT configuration can simply be generated
through “scanning” from the runtime system. This is referred to as online configuration.
In any case, during each startup the EtherCAT master checks whether the slaves it finds match the
configuration. This test can be parameterised in the extended slave settings.
Note
Installation of the latest ESI-XML device description
The TwinCAT EtherCAT master/System Manager needs the device description files for the
devices to be used in order to generate the configuration in online or offline mode. The de-
vice descriptions are contained in the so-called ESI files (EtherCAT Slave Information) in
XML format. These files can be requested from the respective manufacturer and are made
available for download. The ESIs for Beckhoff EtherCAT devices are provided on the Beck-
hoff website. The ESI files should be saved in the TwinCAT installation directory (default:
C:\TwinCAT\IO\EtherCAT ). The files are read (once) when a new System Manager win-
dow is opened.A TwinCAT installation includes the set of Beckhoff ESI files that was cur-
rent at the time when the TwinCAT build was created.
For TwinCAT 2.11 and higher, the ESI directory can be updated from the System Manager, if the
programming PC is connected to the Internet (Option -> “Update EtherCAT Device Descriptions”)
Fig. 62: Updating ESI directory
The following conditions must be met before a configuration can be set up:
• the real EtherCAT hardware (devices, couplers, drives) must be present and installed
• the devices/modules must be connected via EtherCAT cables or in the terminal strand in the same way
as they are intended to be used later
• the devices/modules be connected to the power supply and ready for communication
• TwinCAT must be in CONFIG mode on the target system.
The online scan process consists of:
•
detecting the EtherCAT device [
}
58]
(Ethernet port at the IPC)
•
detecting the connected EtherCAT devices [
}
60]
. This step can be carried out independent of the
preceding step
•
troubleshooting [
}
63]
The
scan with existing configuration [
}
64]
can also be carried out for comparison.
Detecting/scanning of the EtherCAT device
The online device search can be used if the TwinCAT system is in CONFIG mode (blue TwinCAT icon or
blue indication in the System Manager).
EL72x1-0010
58
Version: 2.0
Содержание EL7201-0010
Страница 2: ......
Страница 12: ...Product overview 3 Product overview 3 1 Introduction Fig 8 EL7201 Fig 9 EL7211 EL72x1 0010 12 Version 2 0 ...
Страница 47: ...Commissioning Fig 42 TCP IP setting for the Ethernet port EL72x1 0010 47 Version 2 0 ...
Страница 57: ...Commissioning Fig 61 EtherCAT terminal in the TwinCAT tree EL72x1 0010 57 Version 2 0 ...
Страница 119: ...Commissioning Fig 148 Touch Probe inputs EL72x1 0010 119 Version 2 0 ...
Страница 138: ...Commissioning Fig 168 Process Data tab SM2 EL72x1 0010 default EL72x1 0010 138 Version 2 0 ...
Страница 142: ...Commissioning Fig 171 Process Data tab SM2 EL72x1 0010 default EL72x1 0010 142 Version 2 0 ...