ifm
System Manual
ecomat
mobile
PDM360NG (CR1080, CR1081, CR9042) Target V01
2011-07-28
Variable
Network variable via UDP
153
Excursus: variable list identification (COB ID)
Here we work with variable lists which are exported from one device and imported to one or more
devices. This assignment of the variable lists is identified by a COB ID. The relationship is shown in
the following figure:
Export list
Import list
Import list
COB ID 52 COB ID 53
COB ID 51
Import list
Export list
Import list
COB ID 52
COB ID 53
COB ID 51
Import list
Import list
Export list
COB ID 52 COB ID 53
COB ID 51
Here you see that the COB ID = 51 was assigned to the export variables of DemoProj1 in device 1
and that these variables can be found again with the COB ID = 51 in DemoProj2 and DemoProj3 in
device 2 and device 3. In this example we have used this procedure for the definition of the COB IDs.
NOTE
For the selection of the COB IDs observe the following:
The export list and its corresponding import lists must be assigned to the same COB ID.
In the whole network each COB ID may only be assigned to one export list.
End of excursus: variable list identification (COB ID)
