Siemens SINUMERIK 840D sl Function Manual page 1558

Z1: NC/PLC interface signals
19.1 Various interface signals and functions (A2)
DB19
DBX0.7 Actual values in WCS, 0 = MCS
Edge evaluation: No
Signal state 1 or edge The PLC selects the display of actual values in the workpiece coordinate system (WCS). This means
change 0 → 1 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 This means that when the machine area is selected the coordinate system previously selected (WCS
change 1 → 0 or MCS) is reactivated and displayed.
Application exam‐ Using the interface signal:DB19, DBX0.7 (actual value in WCS) = 1 each time that the machine area
ple(s) is re-selected, the workpiece coordinate system display frequently required by the operator (WCS),
is selected.
Corresponding to ... DB19 DBX20.7 (changeover MCS/WCS)
Additional references Operation Guide HMI (corresponding to the used software)
DB19
DBB6 Analog spindle 1, utilization in percent
Edge evaluation: No
DB19
DBB7 Analog spindle 2, utilization in percent
Edge evaluation: No
DB19
DBB8 Channel number of the machine control panel to HMI
Edge evaluation: No
DB19
DBB10 PLC hard keys (value range 1 ...255, 0 is the initial state)
Edge evaluation: No
Signal state 1 or edge Program area selection active
change 0 → 1
Signal state 0 or edge Program area selection inactive
change 1 → 0
DB19
DBX13.5 Unload part program
Edge evaluation: No
Signal state 1 or edge Unload active
change 0 → 1
1558
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
Signal(s) updated: Cyclically
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions