Siemens SINUMERIK 840D sl Function Manual page 18

Detailed description
2.1 NC/PLC interface signals
DB19 DBX0.7 (Actual value in WKS, 0=MKS)
Switching over of actual-value display between machine and workpiece coordinate system:
• DB19 DBX0.7 = 0: Machine coordinate system (MCS)
• DB19 DBX0.7 = 1: Workpiece coordinate system (WCS)
DB19 DBB12 (control of V24 interface) (HMI Embedded only)
Job interface to control RS-232C. The jobs relate to the user control files in the interface
signals:
DB19 DBB14 (control of the V24 interface)
DB19 DBB15 (control of the V24 interface)
DB19 DBB13 (control of the file transfer via hard disk) (HMI advanced only)
Job byte to control file transfer via hard disk. The jobs relate to the user control file in the
interface signals:
DB19 DBB16 (parts program handling: Number of the control file for user file names)
DB19 DBB17 (parts program handling: Index of the file to be transmitted from the user list)
DB19 DBB14 (control of V24 interface) (HMI Embedded only)
Description byte to specify the PLC index of the axis, channel or TO number for the standard
control file. The standard control file is processed in accordance with the job in the interface
signal:
DB19 DBB12
DB19 DBB15 (control of the V24 interface) (HMI embedded only)
Description byte to specify the line in the standard/user control file in which the file to be
transferred is stored.
DB19 DBB16 (control of file transfer via hard disk) (HMI Advanced only)
Control byte for file transfer via hard disk to define the index for the control file (job list). This
file is handled according to the job in the interface signal:
DB19 DBB13
DB19 DBB17 (control of file transfer via hard disk) (HMI Advanced only)
Control byte for file transfer via hard disk to indicate the line in the user control file in which
the control file to be transferred is stored
DB19 DBB24 (control of V24 interface) (HMI Embedded only)
Status byte for current status of data transfer for "RS-232 ON", "RS-232 OFF", "RS-232
EXTERNAL", "RS-232 STOP", etc., or if an error occurred during data transfer.
12
Basic logic functions: Various NC/PLC interface signals and functions (A2)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0