Appendix A: System addressing 
VM-1 User Guide  49 
Operator layer device address 
Figure 15 identifies the LEDs and switches on a D12LS-VM card. Table 12 lists 
the device addresses for the points on the VM-1 operator layer.  
Figure 15: D12LS-VM LED and switch numbering 
 
Table 12: VM-1 operator layer device addresses 
  Switch / LED 
 
-VM  SW01 to SW12 
LED01 to LED24 
 
 
-VM  SW01 to SW12 
LED01 to LED24 
 
 
-VM  SW01 to SW12 
LED01 to LED24