Siemens SINUMERIK 840D Operating Manual page 585

Changing operands
Depending on the type of operand, you can increment or decrtement the address by 1 place
at a time using the "Operand +" and "Operand -" softkeys.
Note
Axis names as index
For axis names, the softkeys "Operand +" and "Operand -" do not act as index, e.g. for
$AA_IM[X1].
Milling
Operating Manual, 03/2010, 6FC5398-7CP20-1BA0
7. Press the "Display comments" softkey.
The "Comments" column is displayed. You have the option of creating
comments or editing existing comments.
Press the "Display comments" softkey once again to hide the column
again.
8. Press the "Change" softkey if you would like to edit the value.
The "Value" column can be edited.
9. Press the "Insert variable" softkey if you wish to select a variable from
a list of all of the existing variables and insert this.
The "Select variable" window opens.
10. Press the "Filter/search" softkey to restrict the display of variables
(e.g. to mode groups-variables) using the "Filter" selection box and/or
select the desired variable using the "Search" input box.
Press the "Delete all" softkey if you would like to delete the entries for
the operands.
11. Press the "OK" softkey to confirm the changes or the deletion.
- OR -
Press the "Cancel" softkey to cancel the changes.
Examples
DB97.DBX2.5
Result: DB97.DBX2.6
$AA_IM[1]
Result: $AA_IM[2]
MB201
Result: MB200
/Channel/Parameter/R[u1,3]
Result: /Channel/Parameter/R[u1,2]
Alarms, error messages, and system alarms
20.4 PLC and NC variables
585