Variable Paths; Variable Paths For Nc Access Operations - Siemens SINUMERIK 828D Commissioning Manual
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OPC UA Data Access - functional scope
4.3 Variable paths
4.3
Variable paths
4.3.1
Variable paths for NC access operations
The variable paths for NC access are stored in the address space of the SINUMERIK Operate
OPC UA server. Pay attention to the correct upper-case and lower-case of the "nodeID". The
respective identifier of the "nodeID" provides information on the correct notation.
You can obtain additional information on this from the List Manuals for 840D sl and 828D sl
"NC variable and interface signals".
Figure 4-2
The displayed NC variables always represent only the first parameter of the corresponding
NC data area (channel, TO area, mode group).
Example
The R parameters are found under the identifier "/Channel/Parameter/R", which is eventually
mapped to "/Channel/Parameter/R[u1, 1]". If you want to access other parameters, then you
must correspondingly extend the identifier, e.g. "/Channel/Parameter/R[u2, 56]".
Table 4-2
Variable path
/Channel/Parameter/R[u1,10]
/Channel/Parameter/R[u1,1,5]
/Channel/Parameter/R[u1,1,#5]
/Channel/GeometricAxis/name[u2,3]
/Channel/GeometricAxis/actToolBasePos[u1,3]
28
Identifier for R parameter
Examples of variable paths (NC access operations)
Description
R parameter 10 in channel 1
R parameter array
R parameters 1 to 5 in channel 1
Name of the 3rd axis in channel 2
Position of the 3rd axis in channel 1
SINUMERIK Integrate for Engineering Access MyMachine / OPC UA
Commissioning Manual, 10/2015, 6FC5397-3DP40-5BA3
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