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Siemens SINUMERIK 840D Function Manual

Siemens SINUMERIK 840D
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Detailed Description
2.1 Various interface signals and functions (A2)
Basic logic functions: NC/PLC interface signals (Z1)
14 Function Manual, 11/2006, 6FC5397-0BP10-2BA0
DB19
DBX0.3
Clear cancel alarms
Edge evaluation: no Signal(s) updated: cyclic
Signal state 1 or
edge change 0 → 1
Clear error key on the machine control panel is pressed.
All cancel alarms of the NCKs and the operator control panel are then acknowledged. The PLC
application acknowledges the PLC alarms itself.
PowerOn and Reset alarms remain active on the NCK until the cause of the error has been
removed.
Signal state 0 or
edge change 1 → 0
Clear error key on the machine control panel is not pressed.
Functionality Only applicable to HMI Advanced or PCU 50.
Corresponding to .... DB19, DBX20.3 (cancel alarm cleared)
DB19
DBX0.4
Clear recall alarms
Edge evaluation: no Signal(s) updated: cyclic
Signal state 1 or
edge change 0 → 1
Clear error key on the machine control panel is pressed.
All cancel alarms of the NCKs and the control panel are then acknowledged. The PLC application
acknowledges the PLC alarms itself. POWER On and Reset alarms remain active on the NCK until
the cause of the error has been removed.
Signal state 0 or
edge change 1 → 0
Clear error key on the machine control panel is not pressed.
Application
example(s)
Applies to HMI Advanced only
Corresponding to .... DB19, DBX20.4 (recall alarm cleared)
DB19
DBX0.7
Actual value in WCS
Edge evaluation: no Signal(s) updated: cyclic
Signal state 1 or
edge change 0 → 1
The PLC selects the display of actual values in the workpiece coordinate system (WCS). This
means that when the machine area is selected, the WCS display is activated; i.e. the machine and
the supplementary axes as well as their actual positions and distances to go are displayed in the
WCS in the "Position" window.
The interface signal is only evaluated when it enters the basic machine screen; this means that the
operator, within the machine area, can toggle as required between the particular coordinate
systems using the softkeys "actual values MCS" and "actual values WCS".
Signal state 0 or
edge change 1 → 0
This means that when the machine area is selected the coordinate system previously selected
(WCS or MCS) is reactivated and displayed.
Application
example(s)
Using the interface signal:
DB19, DBX0.7 (actual value in WCS) = 1
each time that the machine area is re-selected, the workpiece coordinate system display frequently
required by the operator (WCS), is selected.
Corresponding to .... DB19, DBX20.7 (change over MCS/WCS)
Additional references Operation Guide (corresponding to the used software)

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Siemens SINUMERIK 840D Specifications

General IconGeneral
SeriesSINUMERIK 840D
AxesUp to 31
ChannelsUp to 10
Operating SystemWindows-based
Power Supply24 V DC
Control Unit TypeCNC
InterfaceEthernet, PROFIBUS
DisplayTFT color display
InterpolationSpline
PLCIntegrated PLC
Data StorageCompactFlash, USB

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