Siemens SINUMERIK 840Di Function Manual page 1905

DB31, ...
DBX21.7 Pulse enable
Edge evaluation: no
Signal state 1 or Pulse enable is signaled by the PLC for this drive (axis/spindle).
edge change
The pulses for the drive modules are only enabled if all enable signals (hardware and software) are
0 → 1
available (see figure for DB31, ... DBX93.5).
In this case, the interface signal:
DB31, ... DBX93.7 (pulses enabled)
is signaled to the PLC with a signal.
For additional information refer to DB31, ... DBX93.7 and references.
Signal state 0 or The pulses are disabled by the PLC for this drive.
edge change
If pulse enable is canceled for a moving axis/spindle the axis/spindle is not longer braked in a
1 → 0
controlled fashion. The axis coasts to rest.
Signal irrelevant SINUMERIK FM-NC
for ...
Application Signal relevant to safety
example(s)
Special cases, If pulse enable is canceled for a moving axis/spindle as a result of an EMERGENCY STOP, the
errors, .... axis/spindle only coasts to rest.
Corresponding to .... DB31, ... DBX93.7 (pulses enabled)
Additional references /IAD/ SINUMERIK 840D Startup Guide; Chapter: SIMODRIVE 611D
or
/IAC/ SINUMERIK 810D Installation and Start-up Guide
DB31, ...
DBX1.0 Drive test travel enable
Edge evaluation: no
Signal state 1 or Safety handshake when the function generator is started by the NC.
edge change
If an axis is to be traversed without further operator intervention, using:
0 → 1
DB31, ... DBX61.0 (drive test travel request) = 1 signal,
the NC requests a travel enable signal (permissive signal) from the PLC control.
If all axis travel conditions are fulfilled, PLC acknowledges this with:
DB31, ... DBX1.0 (drive test travel enable) = 1 signal
The PLC always has the master authority in deciding whether an axis can be traversed.
Signal state 0 or The NC does not request permission to move axis from the PLC with:
edge change DB31, ... DBX1.0 (drive test travel enable) = 0 signal
1 → 0
Additional references /IAD/ SINUMERIK 840D Startup Guide; Chapter: SIMODRIVE 611D
or
/IAC/ SINUMERIK 810D Installation and Start-up Guide
NC/PLC Interface Signals (Z1)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Signal(s) updated: cyclic
Signal(s) updated: cyclic
2.1 Various interface signals and functions (A2)
Detailed Description
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