Siemens 810T manual Transmit function in the various modes, ªAUTOMATICº and ªMDI AUTOMATICº mode

09.91 3 Operating Sequences

3.1.9 TRANSMIT coordinate transformation

3.1.9.2 TRANSMIT function in the various modes

ªAUTOMATICº and ªMDI AUTOMATICº mode:

In this mode the TRANSMIT function is elected and deselected via G functions in the program.

Selection of TRANSMIT:	G131
Deselection of TRANSMIT:	G130.

On selection of TRANSMIT control initializes the fictitious axes. The NC interpolates only in the fictitious coordinate system where the axes affected by TRANSMIT are concerned. The contour between the block final values is defined. Please consult the instructions of the machine manufacturer to see which axes are involved in TRANSMIT.

ªJOGº, ªINCºmode:

Definition:	Transformation grouping =	real and fictitious axes involved in the
		transformation

In JOG mode the axes of the transformation grouping can be traversed both in the real and in the fictitious coordinate system. To be able to traverse a fictitious axis you must first select the TRANSMIT transformation with G131 in the program. The machine manufacturer must also have defined that TRANSMIT remain after a RESET (key or mode change), this does not apply to ªAUTOMATIC interrupted.º

Real axes cannot be traversed, if they belong to the transformation grouping. Traverse com- mands coming from outside for such axes are ignored, without an error message appearing. If the control recognizes a traverse command for a fictitious axis, it generates the distance-to- go to the software limit switch of the fictitious axis. If the software limit switch is outside the permissible working area of the machine tool, the limit switches of the real axes of the group- ing restrict the fictitious position. If only the real axes are to be traversed, the channel 1 reserved by the transformation must be enabled again (deselection of the transformation via G130). If a real axis of the transformation grouping is reserved by ªfeed haltº, this applies to all axes of the grouping.

During ªAUTOMATIC interruptedº, ªTEACH INº or ªPLAYBACKº the

transformation grouping cannot be changed.

ªREFPOINTº mode:

On a change to ªREFPOINTº mode the TRANSMIT function is automatically deselected. Reference points therefore only exist for real axes and not for fictitious axes.

ªREPOSº mode:

After ªblock searchº or ªAUTOMATIC interruptedº the contour can only be approached in the previously selected coordinate system.

© Siemens AG 1990 All Rights Reserved 6ZB5 410-0EP02 3-39

SINUMERIK 810T, GA3 (BN)