Doc.Id. SCM-1200-121
Anybus Communicator CAN to CANopen
Doc.Rev. 1.00
Chapter 9
9. Groups and Transactions
9.1 General
The configuration of the Communicator is set up in groups, each containing one or more transactions.
Please note that the groups do not represent a physical device on the CAN network. They are a means
for structuring the application, and maintaining an overview of it. The maximal number of groups is 128.
A transaction can be either a Produce, a Consume or a Query/Response transaction. Each transaction
holds one or more CAN frames, which transport the data on the network. A total of 128 transactions is
allowed, and a total of 256 CAN frames.
Each CAN frame can hold up to 8 bytes of data.
Groups and transactions as well as frames and objects (described in the next section) can be copied and
pasted in the configuration tree, but only at the same level as they were copied from, or their parent.
9.2 Groups
To create a group, right click on ‘Subnetwork’ and
select ‘Add Group’. The name of the group can be
changed by selecting ‘Group’ and then entering a
new name at ‘Group Alias‘.
If you want to insert another group, right click on
‘Subnetwork’ once more. The new group will be
added to the end of the list of groups.
If you right click on a group and select ‘Insert Group’, the new group will be inserted before the selected
group.
It is recommended to change the group name, to better present the configuration.
9.3 Transactions
There are three kinds of transactions: Produce,
Consume and Query/Response.
Selecting the transaction will give the option to
give the transaction an alias. The order of the
transactions in the tree is given as the transaction
number in the parameter section. Each transac-
tion number corresponds to a bit in the transac-
tion live list that can be mapped to the input data
area.
Note
: The transaction live list is always available
in the Diagnostics/Status window, even when it is
not mapped to the input data area in the memory.
