Parameterization - Siemens SINUMERIK 840D Function Manual

H1: Manual traversing
17.9 Approaching a fixed point in JOG
Features of spindles
A spindle changes to the positioning mode on actuating the "Approaching fixed point in JOG"
function. The closed loop position control is active and the axis can traverse to the fixed point.
If no zero mark is detected the alarm message in the axis operation is output:
Alarm 17810 "Channel %1 Axis %2 not referenced"
As a spindle must also be a modulo rotary axis at all times, the same conditions apply for
direction observation as for modulo rotary axes (refer to the paragraph "Features of modulo
rotary axes")
17.9.2

Parameterization

Movement in the opposite direction
The behavior while traversing in the opposite direction - i.e. in the direction opposite to
approaching the fixed point - depends on the following setting:
MD10735 $MN_JOG_MODE_MASK, bit 2 (settings for the JOG mode)
Bit
2
Fixed point positions
Up to four fixed point positions can be defined for an axis:
MD30600 $MA_FIX_POINT_POS[0...3] = <fixed point position 1...4>
Number of valid fixed point positions
The number of fixed point positions entered in MD30600 $MA_FIX_POINT_POS that are
actually valid, can be defined using:
MD30610 $MA_NUM_FIX_POINT_POS = <number of valid fixed point positions>
Note
Exception: G75
For compatibility reasons, the following parameter assignment is also possible for G75:
MD30610 $MA_NUM_FIX_POINT_POS = 0 (no valid fixed point positions)
it is assumed that there are two valid fixed point positions in MD30600
$MA_FIX_POINT_POS[0] and [1].
Fixed point positions 1 and 2 can be activated via the NC/PLC interface, however they can only
be approached via G75.
674
Value Meaning
0 Travel in the opposite direction is not possible (basic setting).
1 Movement in the opposite direction is possible.
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA