Siemens SINUMERIK 808D ADVANCED Series

Commissioning Manual
6FC5397-4EP10-0BA8, 07/2018
337
14.8.2
Addressing NC variables
Addressing the NC variables starts with the path section
nck
.
This section is followed by the data address; its structure should be taken from the SINUMERIK 828D List Manual NC
variable and interface signals under the following link:
https://support.industry.siemens.com/cs/ww/en/ps/14593/man
Example:
<LET name = "tempStatus"></LET>
<OP> tempStatus ="nck/channel/state/chanstatus" </OP>
Frequently used NC variables
See the following table for the common NC variables used for generating user dialogs.
Variable address
Meaning
Remarks
Nck/Channel/MachineAxis/actToolBasePos[n]
Machine coordinates
•
n = 0: axis X
• n = 1: axis Y
• n = 2: axis Z
• n = 3: spindle
nck/Channel/GeometricAxis/actprogpos[n] Workpiece coordinates (where the tool tip is
located in WCS)
nck/Channel/GeometricAxis/actToolEdgeCenter
Pos[n]
Where the tool edge center is located in
WCS
nck/Channel/State/actTNumber
Actual tool number
nck/Channel/State/actDNumber Actual tool edge number
nck/Channel/State/actFeedRateIpo
Actual feedrate
nck/Channel/State/cmdFeedRateIpo Programmed feedrate
nck/Channel/Spindle/actSpeed
Actual spindle speed
nck/Channel/Spindle/cmdSpeed
Programmed spindle speed
For turning
machines
nck/Tool/Compensation/cuttEdge
Param[u1,cn,p+2]
Length X of tool n tool edge m
• n = tool number
• m = tool edge number
• p = (m - 1) x 35
nck/Tool/Compensation/cuttEdge
Param[u1,cn,p+3]
Length Z of tool n tool edge m
nck/Tool/Compensation/cuttEdge
Param[u1,cn,p+11]
Length X for tool wear of tool n tool edge m
nck/Tool/Compensation/cuttEdge
Param[u1,cn,p+12]
Length Z for tool wear of tool n tool edge m
For milling
machines
nck/Tool/Compensation/cuttEdge
Param[u1,cn,p+2]
Length X of tool n tool edge m
nck/Tool/Compensation/cuttEdge
Param[u1,cn,p+3]
Length Y of tool n tool edge m
nck/Tool/Compensation/cuttEdge
Param[u1,cn,p+4]
Length Z of tool n tool edge m
nck/Tool/Compensation/cuttEdge
Param[u1,cn,p+11]
Length X for tool wear of tool n tool edge m
nck/Tool/Compensation/cuttEdge
Param[u1,cn,p+12]
Length Y for tool wear of tool n tool edge m
nck/Tool/Compensation/cuttEdge
Param[u1,cn,p+13]
Length Z for tool wear of tool n tool edge m
nck/Tool/Compensation/cuttEdgeParam[u1,cn,p+
5]
Radius of tool n tool edge m
nck/Tool/Compensation/edgeData[cn,p+14]
Radius for tool wear of tool n tool edge m
nck/Channel/ProgramInfo/block[u1,0]
Previous line of the currently executed block
nck/Channel/ProgramInfo/block[u1,1]
Currently executed block
nck/Channel/ProgramInfo/block[u1,2]
Next line of the currently executed block