Siemens SINUMERIK 840D sl Programming Manual page 23

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The data structure in the link variables memory is illustrated in the following figure. The

actual current value is transmitted in the REAL value.

NCU1 uses link variable $A_DLR[ 16 ] to write the actual current value of axis AX2 to the link

variables memory cyclically in the interpolation cycle in a static synchronized action.

Program code

N111 IDS=1 WHENEVER TRUE DO $A_DLR[16]=$VA_CURR[AX2]

NCU2 uses link variable $A_DLR[ 16 ] to read the actual current value of axis AX2 from the

link variables memory cyclically in the interpolation cycle in a static synchronized action. If

the actual current value is greater than 23.0 A, alarm 61000 is displayed.

Program code

N222 IDS=1 WHEN $A_DLR[16] > 23.0 DO SETAL(61000)

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