Siemens SINUMERIK 840D sl Function Manual page 515

Rotational position
The rotational position of the Cartesian coordinate system is specified by machine data as
described in the following paragraph.
TRANSMIT_ROT_AX_OFFSET_t
The rotational position of the x-y plane of the Cartesian coordinate system in relation to the
defined zero position of the rotary axis is specified with:
MD24900 $MC_TRANSMIT_ROT_AX_OFFSET_t= ... °
In this case, "t" is substituted by the number of the TRANSMIT transformations declared in
the transformation data blocks (t may not be greater than 2).
Direction of rotation
The direction of rotation of the rotary axis is specified by machine data as described in the
following paragraph.
TRANSMIT_ROT_SIGN_IS_PLUS_t
If the rotary axis rotates in an anti-clockwise direction on the X-Y plane when viewed along
the Z axis, then the machine axis must be set to 1, but otherwise to 0.
MD24910 $MC_TRANSMIT_ROT_SIGN_IS_PLUS_t=1
In this case, "t" is substituted by the number of the TRANSMIT transformations declared in
the transformation data blocks (t may not be greater than 2).
Position of tool zero
The position of the tool zero point is specified by machine data as described in the following
paragraph.
Extended Functions
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Kinematic Transformation (M1)
TRANSMIT
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