Siemens SINUMERIK 840D sl Function Manual page 2072

Detailed Description
2.8 Help function output to PLC (H2)
DB21, ... S functions 1 to 3
DBB98 - DBB115
Extended address S functions 1 to 3
Edge evaluation: no
Signal state 1 or Up to 3 S functions programmed in an NC block are simultaneously made available here as soon
edge change as the S change signals are available.
0 → 1
Value range of the spindle speed: 0 to 999 999; integer number
Value range of the extended address: 0 to 6; integer number
The S functions remain valid until they are overwritten by new S functions.
Signal state 0 or •
edge change
•
1 → 0
Application Spindle speed control by the PLC.
example(s) The extended address is used to program for which spindle the S word is valid.
e.g.: S2=500
DB21, ...
DBB118, DBB119 T function 1
Edge evaluation: no
Signal state 1 or The T function programmed in an NC block is made available here
edge change as soon as the T change signal is available.
0 → 1
Value range of T functions: 0 to 99 999 999; integer number
The T function remains valid until it is overwritten by a new T function.
Signal state 0 or •
edge change
•
1 → 0
Application Control of automatic tool selection.
example(s)
Special cases, With T0, the current tool is removed from the tool holder but not replaced by a new tool (default
errors, ...... configuration of the machine manufacturer).
DB21, ...
DBB129 D function 1
Edge evaluation: no
Signal state 1 or The D function programmed in an NC block is made available here
edge change as soon as the D change signal is available.
0 → 1
Value range of D functions: 0 to 999; integer number
The D function remains valid until it is overwritten by a new D function.
Signal state 0 or •
edge change
•
1 → 0
Application Implementation of protective functions.
example(s)
Special cases, D0 is reserved for deselecting the current tool offset.
errors, ......
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Signal(s) updated: Jobcontrolled by NCK
After the PLC has ramped-up.
All help functions are deleted before a new function is entered.
Signal(s) updated: Jobcontrolled by NCK
After the PLC has ramped-up.
All help functions are deleted before a new function is entered.
Signal(s) updated: Jobcontrolled by NCK
After the PLC has ramped-up.
All help functions are deleted before a new function is entered.
Basic logic functions: NC/PLC interface signals (Z1)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0