Signals From Channel (Db21 - Siemens SINUMERIK 840D sl Function Manual

19.3.3

Signals from channel (DB21, ...)

Description of signals from channel to PLC
DB21, ...
DBX24.3 DRF selected
Edge evaluation: No
Signal state 1 The DRF function is active.
Signal state 0 The DRF function is not active.
Signal irrelevant for ... JOG mode
Corresponding to ... DB21, ... DBX0.3 (activate DRF)
DB21, ...
DBX33.3 Handwheel override active
Edge evaluation: No
Signal state 1 The function "Handwheel override in Automatic mode" is active for the programmed path axes. The
handwheel pulses of the 1st geometry axis function as a velocity override on the programmed path
feedrate.
In the following cases, the override is inactive:
● The path axes have reached the programmed target position
● The distance-to-go has been deleted: DB21, ... DBX6.2 == 1 (delete distance-to-go)
● RESET was initiated
Signal state 0 The "Handwheel override in Automatic mode" function is not active.
Extended Functions
Function Manual, 10/2015, 6FC5397-1BP40-5BA3
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
Z2: NC/PLC interface signals
19.3 Manual and Handwheel Travel (H1)
905