Siemens SINUMERIK 840D sl Function Manual page 1002

NC/PLC interface signals (Z2)
19.1 Digital and analog NCK I/Os
Description of signals from PLC to NC
DB10
DBB0, 122, 124, 126, Disable digital NCK inputs
128
Edge evaluation: No
Signal state 1 or The digital input of the NCK is disabled by the PLC. It is thus set to "0" in a defined way in the
edge change 0 → 1 control.
Signal state 0 or The digital input of the NCK is enabled. The signal state applied at the input can now be read
edge change 1 → 0 directly in the NC parts program.
Corresponding to .... DB10 DBB1 (Setting by PLC of digital NCK inputs)
DB10 DBB60 (actual value for digital NCK inputs)
MD10350 $MN_FASTIO_DIG_NUM_INPUTS
DB10
DBB1, 123, 125, 127, Setting by PLC of digital NCK inputs
129
Edge evaluation: No
Signal state 1 or The digital NCK input is set to a defined "1" state by the PLC. This means the signal state at the
edge change 0 → 1 hardware input and disabling of the input (IS "Disable the digital NCK inputs") have no effect.
Signal state 0 or The signal state at the NCK input is enabled for read access by the NC parts program. However,
edge change 1 → 0 the state can be accessed only if the NCK input is not disabled by the PLC (IS "Disable digital NCK
inputs" = 0).
Corresponding DB10 DBB0 (Disable digital NCK inputs)
to ...
DB10 DBB60 (actual value for digital NCK inputs)
MD10350 $MN_FASTIO_DIG_NUM_INPUTS
DB10
DBB4, 130, 134, 138, Disable digital NCK outputs
142
Edge evaluation: No
Signal state 1 or The digital NCK output is disabled. "0V" is output in a defined way at the hardware output.
edge change 0 → 1
Signal state 0 or The digital output of the NCK is enabled. As a result, the value set by the NC parts program or the
edge change 1 → 0 PLC is output at the hardware output.
Corresponding DB10 DBB5 (Overwrite screen form for digital NCK outputs)
to ...
DB10 DBB5 (Setting mask for digital NCK outputs)
DB10 DBB6 (Setting by PLC of digital NCK outputs)
MD10360 $MN_FASTIO_DIG_NUM_OUTPUTS
1002
Signal(s) updated: Cyclic
Signal(s) updated: Cyclic
Signal(s) updated: Cyclic
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Extended Functions