Siemens SINUMERIK 840D sl Function Manual page 1020

Z2: NC/PLC interface signals
19.1 Digital and analog NCK I/Os
DB10
DBB167 Setting screen form of analog NCK outputs
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 The analog output of the NCK is disabled. "0V" is output in a defined way at the hardware output.
edge change 0 → 1
Signal state 0 or The analog 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 to .... DB10 DBB166 (Overwrite screen form of 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
DBB170 - 185 Setting value from PLC for analog NCK outputs
Edge evaluation: No
Signal state 1 or With this setting value, the value for the analog hardware output can be changed by the PLC.
edge change 0 → 1 There are two possibilities:
•
•
The setting value from the PLC is specified as a fixed point number (16 bit value including sign) in
2's complement.
Signal state 0 or As the interface signal is only evaluated by the NCK on signal transition 0 →1 it must be reset to "0"
edge 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 DBB166 (Overwrite screen form of analog NCK outputs)
DB10 DBB167 (Setting screen form of analog NCK outputs)
MD10310 $MN_FASTIO_ANA_NUM_OUTPUTS
1020
Signal(s) updated: Cyclic
Signal(s) updated: Cyclic
With the "Overwrite screen form":
With signal transition 0 → 1 in the 'overwrite screen form' the PLC overwrites the previous 'NCK
value' with the 'setting value'. This is the new "NCK value".
With the "setting screen form":
On signal state 1 in the "setting creen form", the "PLC value" is activated. The value used is the
'setting value'.
Function Manual, 09/2009, 6FC5397-1BP20-0BA0
Extended Functions