Siemens SINUMERIK 802D sl Function Manual page 150

Manual and Handwheel Travel (H1)
8.5 Fixed-point approach in JOG
Approaching other fixed point
If a different fixed point is set during the fixed-point approach, the axis motion is stopped and
the following alarm is signaled:
Alarm 17812 "Channel %1 axis %2 fixed-point approach in JOG: Fixed point changed"
The message signal "JOG - Approaching fixed point active" displays the number of the newly
selected fixed point. The JOG traverse must be triggered again to continue traversing.
Note
To avoid the alarm message, the machine user should proceed as follows:
1. Cancel the current traverse movement with residual distance deletion.
2. Activate fixed point approach for another fixed point and start the operation after the axis
Withdrawal from fixed point / deactivation
To withdraw from a fixed position, you must deactivate the "Approaching fixed point in JOG"
function. This is done by resetting the activation signal to "0".
V380x 1001.0-2 = 0
The message signals "JOG - Approaching fixed point active" and "JOG - Approaching fixed
point reached" are canceled on leaving the fixed-point position.
Special case: Axis is already on fixed point
The axis cannot be moved if, while starting the fixed point traverse, the axis is already at the
position of the fixed point to be approached. This is displayed by means of the following
channel status message:
"JOG: <Axis> position reached"
To withdraw from the fixed position, you must deactivate the "Approaching fixed point in
JOG" function.
Special features of incremental travel
If, during incremental travel, the fixed point is reached before the increment is completed,
then the increment is considered to have been completed fully. This is the case even when
only whole increments are traveled.
MD11346 HANDWH_TRUE_DISTANCE = 2 or 3
Features of modulo rotary axes
Modulo rotary axes can approach the fixed point in both directions (bit 2 of MD10735 has no
significance for them). No attempt is made to follow the shortest path (
approach.
150
comes to a standstill.
) during the
DC
Turning, Milling, Nibbling
Function Manual, 11/2012, 6FC5397-1CP10-5BA0