Siemens SINUMERIK 840D sl Function Manual page 881

DB10
DBB166 Overwrite screen form for analog NCK outputs
Edge evaluation: No
Signal state 1 or edge On signal transition 0 → 1 the previous NCK value is overwritten by the setting value (IS "Setting
change 0 → 1 value from PLC for analog NCK outputs"). The previous NCK value which, for example, was directly
set by the part program, is lost.
The analog value specified by the PLC setting value forms the new NCK value.
Signal state 0 or edge As the interface signal is only evaluated by the NCK on signal transition 0 → 1 it must be reset to "0"
change 1 → 0 again by the PLC user program in the next PLC cycle.
Special cases, Note:
errors, .... The PLC interface for the setting value 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 must be avoided via the PLC user program.
Corresponding to .... DB10 DBB168 (Disable analog NCK outputs)
DB10 DBB167 (Setting screen form of analog NCK outputs)
DB10 DBB170-185 (Setting by PLC of analog NCK outputs)
MD10310 $MN_FASTIO_ANA_NUM_OUTPUTS
DB10
DBB167 Setting screen form of analog NCK outputs
Edge evaluation: No
Signal state 1 or edge Instead of the NCK value, the PLC value is output at the analog hardware output. The PLC value
change 0 → 1 must first be stored in IS "Setting value from PLC for the analog NCK outputs".
The current NCK value is not lost.
Signal state 0 or edge The NCK value is output at the analog hardware output.
change 1 → 0
Special cases, Note:
errors, .... The PLC interface for the setting value 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 must be avoided via the PLC user program.
Corresponding to .... DB10 DBB168 (Disable analog NCK outputs)
DB10 DBB166 (Overwrite screen form of analog NCK outputs)
DB10 DBB170-185 (Setting by PLC of analog NCK outputs)
MD10310 $MN_FASTIO_ANA_NUM_OUTPUTS
DB10
DBB168 Disable analog NCK outputs
Edge evaluation: No
Signal state 1 or edge The analog output of the NCK is disabled. "0V" is output in a defined way at the hardware output.
change 0 → 1
Extended Functions
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Signal(s) updated: Cyclic
Signal(s) updated: Cyclic
Signal(s) updated: Cyclic
Z2: NC/PLC interface signals
19.1 Digital and analog NCK I/Os (A4)
881