H1: Manual and handwheel travel
3.1 Introduction
Extended Functions
146 Function Manual, 03/2013, 6FC5397-1BP40-3BA1
The interface signal DB31, ... DBX1.7 (axial feedrate override active) has no meaning for
switch position 0%.
Instead of being set by the feedrate override switch position (gray code), the percentage
value (0% to 200%) can optionally be set directly by the PLC. Again, the selection is made
via machine data.
References:
Function Manual, Basic Functions; Feedrates (V1)
Acceleration
With manual travel and handwheel travel, acceleration also takes place according to a
programmed characteristic. The acceleration characteristic effective for JOG for the
individual axis is defined, using the following axial machine data:
MD32420 $MA_ JOG_AND_POS_JERK_ENABLE (basic setting of the axial jerk limiting)
You can specify your own axial acceleration and jerk limitation values for manual travel in
JOG:
MD32301 $MA_JOG_MAX_ACCEL (maximum axial acceleration for JOG movements)
MD32436 $MA_JOG_MAX_JERK (maximum axial jerk for JOG movements)
Reference:
Function Manual, Basic Functions; Acceleration (B2)
Display
The JOG main screen appears when JOG mode is selected. This main screen contains
values relating to position, feedrate, spindle, and tool.
Coordinate systems
In JOG mode, the user has the option to traverse axes in different coordinate systems.
The following coordinate systems are available:
● Basic coordinate system
Each axis can be traversed manually.
● Workpiece coordinate system
Only geometry axes can be traversed manually (channel-specific).
Geometry axes
In manual travel, a distinction must be made as to whether the affected axis is to be
traversed as a machine axis (axis-specific) or as a geometry axis (channel-specific).
First we will focus on the characteristics of machine axes. Special features relating to the
manual traversal of geometry axes are described in "Manual travel of geometry/orientation
axe
s (Page 209)".
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