4.2 Browsing
If
the
OPC UA data access interface is browsed, then the available address space is mapped
under "Sinumerik".
Global User Data (GUD) can be found under the "/Sinumerik/GUD" node.
The PLC blocks (inputs, outputs, bit memory, data blocks) can be found under the "/Sinumerik/
Plc" node.
Machine data can be found under the node "/Sinumerik/TEA".
Setting data can be found under the node "/Sinumerik/SEA".
Observe the following during browsing:
● In the address space of the NC, the displayed variables always represent only the first
parameter of the corresponding first OPI unit.
Example:
The R parameters can be found under "Sinumerik > Channel > Parameter > R". The
corresponding identifier is called "/Channel/Parameter/R", which is finally mapped to "/
Channel/Parameter/R[u1, 1]". If you want to access other parameters, then you must
correspondingly extend the identifier; you cannot directly accept the identifiers obtained
when browsing, e.g. "/Channel/Parameter/R[u2, 56]".
● In the address space of the NC, the displayed variables represent the access format that
has to be extended accordingly.
Example:
The variable "/Plc/MB" is in the address space. This variable must be extended by the
appropriate byte number, e.g. "/Plc/MB6". Only then is a value supplied.
● The address space of the NC also contains variables that are not available in a
corresponding machine configuration. These variables return "BadAttributeIdInvalid" as
value.
OPC UA Data Access - functional scope
4.2 Browsing
SINUMERIK Integrate for Engineering Access MyMachine / OPC UA
26 Commissioning Manual, 10/2015, 6FC5397-3DP40-5BA3
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