Sinumerik 840D System Variables Naming Tips
There are multiple system variables in sinumerik 840D cnc control, so remembering them is not easy.
The sinumerik 840D system variables are named in a way that makes remembering them easy. You just have to remember a few rules. Every system variable of sinumerik 840D cnc control applies those rules or naming conventions.
Sinumerik 840D System Variables 1st Letter
| 1st letter | Meaning |
| $M | Machine Data |
| $S | Setting Data |
| $T | Tool Management Data |
| $P | Programmed Values |
| $A | Current Values |
| $V | Service Data |
Sinumerik 840D System Variables 2nd Letter
| 2nd letter | Meaning |
| N | NCK Global |
| C | Channel-specific |
| A | Axis-specific |
Examples of Sinumrik 840D System Variables
$AA_IM : Current axis-specific values in machine-coordinate-system.
$P_SEARCH : Sinumerik 840D System Variable to Inquire Block Search $P_SEARCH
