Table of Contents
Advertisement
TwinCAT supplement
Next, a box is integrated in the form of a GSDML (right click on "PROFINET I/O Device Protocol"). In
TwinCAT it is also possible to configure several virtual PROFINET devices. Each device is again to be
viewed as its own adaptor, i.e. each virtual device is assigned a default MAC address from a reserved range.
To avoid possible address conflicts, the MAC address of virtual devices can also be changed. The name
which the device was given in the strand (or in the "General" tab), is also taken as a PROFINET station
name following a restart. On the basis of different MAC addresses and names, a PROFINET controller can
now distinguish several devices in the strand. In turn, the individual virtual devices can then be linked with
terminals from the E-bus, e.g. via a PLC task. As a result of this, e.g., several EL6601 terminals in the E-bus
can be configured as individual PROFINET devices!
In PROFINET, different user profiles can be defined within a device (API - Application Process Instance). In
Twin CAT, precisely one API is permitted / supported per device!
In accordance with PROFINET, the DAP (Device Access Point) is always defined on slot 0. Device-specific
data is defined in it. In accordance with PROFINET, several DAPs can be defined; however, in TwinCAT
there is currently precisely one!
2. Process data
The process data can be inserted from slot 1. This takes place by integrating the desired module in the API.
Each module (slot) has at present precisely one sub-module (sub-slot). The configuration of the modules and
hence the creation of the process data image on the PROFINET side takes place by means of specifying
data types / data widths (e.g. byte, word, dword, float 32).
The designation of the inputs and outputs always takes place in TwinCAT from the TwinCAT point of view,
i.e. the inputs are from the PROFINET point of view (from the controller) the outputs! Therefore the data of
the PROFINET I/O devices is represented as follows:
Fig. 29: Representation of the inputs/outputs of the PROFINET I/O device
This representation applies only to the TwinCAT PROFINET device, in the case of a TwinCAT PROFINET
controller, the view will correlate again!
3. General settings
In the "PROFINET Device" tab, the Instance ID and the PROFINET Frame ID as well as the Client and
Server UDP port can be changed. However, the default settings suffice for normal operation!
46
Version: 3.4.0
EL6631-0010
Advertisement
Table of Contents
