
Commissioning
Fig. 85: Configuring the process data
Note
Manual modification of the process data
According to the ESI description, a PDO can be identified as “fixed” with the flag “F” in the
PDO overview (Fig.
“Configuring the process data”
, J). The configuration of such PDOs
cannot be changed, even if TwinCAT offers the associated dialog (“Edit”). In particular, CoE
content cannot be displayed as cyclic process data.This generally also applies in cases
where a device supports download of the PDO configuration, “G”.In case of incorrect con-
figuration the EtherCAT slave usually refuses to start and change to OP state. The System
Manager displays an “invalid SM cfg” logger message:This error message (“invalid SM IN
cfg” or “invalid SM OUT cfg”) also indicates the reason for the failed start.
6.1.6
General Notes - EtherCAT Slave Application
This summary briefly deals with a number of aspects of EtherCAT Slave operation under TwinCAT. More
detailed information on this may be found in the corresponding sections of, for instance, the
EtherCAT
System Documentation
.
Diagnosis in real time: WorkingCounter, EtherCAT State and Status
Generally speaking an EtherCAT Slave provides a variety of diagnostic information that can be used by the
controlling task.
This diagnostic information relates to differing levels of communication. It therefore has a variety of sources,
and is also updated at various times.
Any application that relies on I/O data from a fieldbus being correct and up to date must make diagnostic
access to the corresponding underlying layers. EtherCAT and the TwinCAT System Manager offer
comprehensive diagnostic elements of this kind. Those diagnostic elements that are helpful to the controlling
task for diagnosis that is accurate for the current cycle when in operation (not during commissioning) are
discussed below.
EL72x1-0010
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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 ...