Modes and Jobs
9-10
FM 351 Positioning Module
C79000-G7076-C351-02
Working Range Limits of a Linear Axis
The limits for the “jogging” mode differ depending upon whether an axis is
synchronized or not.
Table 9-1 Jogging with a Synchronized and Non-Synchronized Axis
Axis is not synchronized Axis is synchronized.
If the travel range limit is passed during jogging:
• the indicated actual value is no longer
valid
• positioning is aborted.
1000 m
The indicated actual value is no longer va-
lid
Jogging means positioning on targets located at a
distance from the software limit switches
corresponding to the entire target range.
The working range limits are calculated as follows:
• SLE– 1/2 target range for the end of the linear
axis in the plus direction
• SLS+ 1/2 target range for the end of the linear
axis in the minus direction
If you do not release the button earlier, the FM 351
terminates at a target point which is located at a
distance corresponding to half the target range
before the relevant software limit switch. All ranges
required to ensure correct termination, are placed
around this target point by the FM 351.
SLEMaximum target
Part of the working range in which no target
position may be located.
1
2
3
Switchover diff. plus Switch-off diff. plus
1 2 3
1/2 target range
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