User guide
113
VTB USER GUIDE
With a double-click on one of it, will open a form where we can see and set the object that we want to manage. It
shows the name of the object, that we can change to easy remember it, the Can Open object dictionary index and sub-
index and the length, expressed as bit.
Changing the index, always expressed as hexadecimal
number, the software will search the relative object
inside the EDS file of the device, with its standard
name.
Also, it's possible to browse inside the list, to search
what we need.
Clicking the “OK” button all changes will be
confirmed, while the “↺” button will discard any of it.
Pushing the “+” button on the previous form, a new
object will be inserted inside the PDO, and opening it
in the same way, we can configure the object to be
exchanged.
About the object configuration inside a PDO we have
to always remember two things: the first, as define in
CanOpen specifications, the max length of a PDO will
be 8 bytes, 64 bits, we can't exceed this length. We can use less of it, but not more than this. Second, activating a PDO,
normally the application will show a configuration taken directly on the EDS file.
We can try to change it, but we have to verify if the device we are setting, have freely configurable PDOs or not.
Otherwise, our operation will the ignored, in the best case, or generate an error during the operation, in the worst
one.
Parameters
In the lower part of a node-branch, there are parameters.
Parameters are device-objects that we want to write during the node initialization.
It can be useful, for ex, to set the output state when the device loose the communication with the master, or to
initialize some particular function inside the slave device.
Making a double-click on the parameters branch, it's possible to add a new parameter in a form similar to the PDO
configuration while making the same on a parameter, it's possible to open and change its characteristics.
The only main difference between a PDO and a parameter property, is that we have to set a value that will written into
the device.
Object details
Parameter details