Siemens SINUMERIK 840D sl Function Manual page 1004

NC/PLC interface signals (Z2)
19.1 Digital and analog NCK I/Os
DB10
DBB7, 133, 137, 141, Setting screen form for digital NCK outputs
145
Edge evaluation: No
Signal state 1 or Instead of the NCK value, the PLC value is output at the digital hardware output. The PLC value
edge change 0 → 1 must first be deposited in IS "Setting value from PLC for digital NCK outputs".
The current NCK value is not lost.
Signal state 0 or The NCK value is output at the digital hardware output.
edge change 1 → 0
Special cases, Note:
errors, .... The PLC interface for the setting value (DB10, DBB6) is used both by the overwrite screen form
(for signal transition 0 → 1) and the setting screen form (for signal state 1). Simultaneous activation
of the two screen forms via the PLC user program must be avoided.
Corresponding to .... DB10 DBB4 (Disable digital NCK outputs)
DB10 DBB5 (Overwrite screen form for digital NCK outputs)
DB10 DBB6 (Setting value by PLC of digital NCK outputs)
MD10360 $MN_FASTIO_DIG_NUM_OUTPUTS
DB10
DBB146 Disable analog NCK inputs
Edge evaluation: No
Signal state 1 or The analog 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 analog input of the NCK is enabled. This means that the analog value at the input can be read
edge change 1 → 0 directly in the NC parts program if the setting screen form is set to 0 signal by the PLC for this NCK
input.
Corresponding DB10 DBB147 (Setting screen form of analog NCK inputs)
to ...
DB10 DBB148 (Setting by PLC of analog NCK inputs)
DB10 DBB199 ... (Actual value of analog NCK inputs)
MD10300 $MN_FASTIO_ANA_NUM_INPUTS
DB10
DBB147 Setting screen form of analog NCK inputs
Edge evaluation: No
Signal state 1 or The setting value from the PLC acts as the enabled analog value
edge change 0 → 1 (IS "Setting value from PLC for analog NCK inputs").
Signal state 0 or The analog value 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 analog
NCK inputs" = 0).
Corresponding to .... DB10 DBB146 (Disable analog NCK inputs)
DB10 DBB148 to 163 (Setting by PLC of analog NCK inputs)
DB10 DBB199-209 (Actual value of analog NCK inputs)
MD10300 $MN_FASTIO_ANA_NUM_INPUTS
1004
Signal(s) updated: Cyclic
Signal(s) updated: Cyclic
Signal(s) updated: Cyclic
Function Manual, 01/2008, 6FC5397-1BP10-3BA0
Extended Functions