4.3.2 Variable paths for GUD access operations
The variable
paths for NC access are stored in the address space of the SINUMERIK Operate
OPC UA server under the "/Sinumerik/GUD" node. 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.
The displayed GUD variables always represent only the first parameter (for GUD arrays) of
the first NC channel (for channel-dependent GUD variables). If you want to access a different
parameter of a GUD array or a different channel, you must extend the identifier accordingly
for the NC access.
GUD arrays are 1-indexed for access, and access is always one-dimensional. This means,
the index must be calculated for multi-dimensional arrays.
Example 1: One-dimensional array, NC-global GUD array
"UGUD.DEF" file
DEF NCK INT ARRAY[2]
M17
Access is performed as follows:
ARRAY[0] → /NC/_N_NC_GD3_ACX/ARRAY[1]
ARRAY[1] → /NC/_N_NC_GD3_ACX/ARRAY[2]
Example 2: Two-dimensional array, channel-dependent GUD array
"UGUD.DEF" file
DEF CHAN INT ABC[3,3]
M17
Access is performed as follows:
ABC[0,0] → /NC/_N_CH_GD3_ACX/ABC[u1, 1]
ABC[0.1] → /NC/_N_CH_GD3_ACX/ABC[u1, 2]
ABC[0.2] → /NC/_N_CH_GD3_ACX/ABC[u1, 3]
ABC[1.0] → /NC/_N_CH_GD3_ACX/ABC[u1, 4]
ABC[1.1] → /NC/_N_CH_GD3_ACX/ABC[u1, 5]
ABC[1.2] → /NC/_N_CH_GD3_ACX/ABC[u1, 6]
ABC[2.0] → /NC/_N_CH_GD3_ACX/ABC[u1, 7]
ABC[2.1] → /NC/_N_CH_GD3_ACX/ABC[u1, 8]
ABC[2.2] → /NC/_N_CH_GD3_ACX/ABC[u1, 9]
4.3.3 Variable paths for PLC access operations
The variable
paths for PLC access are stored in the address space of the SINUMERIK Operate
OPC UA server under the "/Sinumerik/PLC" node. 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.
OPC UA Data Access - functional scope
4.3 Variable paths
SINUMERIK Integrate for Engineering Access MyMachine / OPC UA
Commissioning Manual, 10/2015, 6FC5397-3DP40-5BA3 29
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