Siemens SINUMERIK 840D sl Function Manual page 173

Programming
NCU1
A static synchronized action is used to write actual current value $VA_CURR of axis AX2 to
the first 8 bytes of the link variables memory cyclically in the interpolation cycle, via link
variable $A_DLR[ 0 ] (REAL value):
Program code
N111 IDS=1 WHENEVER TRUE DO $A_DLR[0]=$VA_CURR[AX2]
NCU2
A static synchronized action is used to read actual current value $VA_CURR of axis AX2,
transferred via link communication, cyclically in the interpolation cycle via link variable
$A_DLR[ 0 ]. If the actual current value is greater than 23 A, alarm 61000 is displayed.
Program code
N222 IDS=1 WHEN $A_DLR[0] > 23.0 DO SETAL(61000)
Extended Functions
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Several Operator Panels on Several NCUs, Distributed Systems (B3)
Link communication
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