Siemens SINUMERIK 840DE sl Commissioning Manual page 806

Generating user dialogs
1.9 Addressing components
Figure 1-7
Parameter number[do<DO-index>]
Example:
p0092[do1]
Alternatively, the drive index can be read from a local variable using $<variable name>
"substitution characters".
z.B. DO$local variable
Example:
<DATA name ="drive/cu/p0092">1</DATA>
<DATA name ="drive/dc/p0092[do1] ">1</DATA>
Indirect addressing:
<LET name = "driveIndex> 0 </LET>
<OP> driveIndex = $ctrlout_module_nr[0, AX1] </OP>
<DATA name ="drive/dc[do$driveIndex]/p0092">1</DATA>
88
Drive parameter p0978 [ ...] at the control
Programming Manual, 12/2017, 6FC5397-1DP40-6BA1
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