Siemens SINUMERIK 808D ADVANCED Parameter Manual page 446

Detailed descriptions of interface signals
5.8 Axis / spindle-specific signals
DB390x
DBX4002.5
Edge evaluation: No
Signal state 1
Signal state 0
Note for the reader
DB390x
DBX4002.6
Edge evaluation: No
Signal state 1
Signal state 0
corresponding to ...
Note for the reader
DB390x
DBX4002.7
Edge evaluation: No
Signal state 1
Signal state 0
446
n < n
act x
Signal(s) to drive (NCK → PLC)
Signal(s) updated: Cyclic
The drive signals to the PLC that the speed actual value n
threshold speed (n ).
x
The speed actual value is higher than the threshold speed.
Commissioning Manual, Turning and Milling
n = n
act set
Signal(s) to drive (NCK → PLC)
Signal(s) updated: Cyclic
The PLC is signaled that after a new speed setpoint input, the speed actual
value has reached the speed tolerance bandwidth and has remained within
this tolerance bandwidth for the specified time.
If the actual speed value then leaves the tolerance band, then contrary to
the "Ramp-up completed" signal, the interface signal "n
The conditions described above have not yet been fulfilled. The speed actual
value is outside the speed tolerance bandwidth.
DB390x DBX4002.2 (ramp-up completed)
Commissioning Manual, Turning and Milling
Variable signaling function
Signal(s) to drive (NCK → PLC)
Signal(s) updated: Cyclic
The drive signals to the PLC that the threshold value of the quantity to be
monitored has been exceeded. Using the variable signaling function, it is
possible to monitor for any axis any quantity from the drive, which can be
parameterized, to check if it violates a certain threshold, which can then be
signaled as interface signal to the PLC.
Monitoring:
The parameterized variable is monitored to check whether it exceeds a de‐
fined threshold. In addition, a tolerance band (hysteresis) can be defined
which is considered when scanning for violation of the threshold value. Fur‐
ther, the "threshold value exceeded" signal can be logically combined with
a pull-in and drop-out delay time.
Selection:
The quantity to be monitored can be selected by entering a signal number
or by entering a symbolic address.
The drive signals the PLC that the threshold value of the quantity to be moni‐
tored has not been exceeded or the specified conditions are not fulfilled.
If the variable signaling function is disabled the signal state "0" is output to
the PLC.
Parameter Manual, 08/2015, 6FC5397-8EP40-0BA1
is less than the
act
= n " is set to 0.
act set
Parameter Manual