Siemens SIMATIC FM 351 - Jogging with a Synchronized and Non-Synchronized Axis

9
9-5
FM 351 Positioning Function Module
EWA 4NEB 720 6001-02
Aborting is a process with which the otherwise normal sequence of a target
approach is not carried out (see Chapter 2.2)
“Jogging” is aborted when:
 The signal Drive enable is deleted.
 A traverse range limit is crossed with a linear axis.
With the FM 351 jogging is possible at two speeds:
 Jogging at rapid speed.
 Jogging at creep speed.
You specify the speed on calling the operating mode either in the parameter-
ization interface or in the FC JOG_MOD.
The limits for the Jogging operating mode differ for a synchronized and a
non-synchronized axis.
Table 9-1 Jogging with a Synchronized and Non-Synchronized Axis
Axis is Not Synchronized Axis is Synchronized
If the traverse range limit is crossed during jogging:
 The actual value display jumps to the opposite limit
and
 The positioning is aborted.
–1000 m
1000 m
Jogging is positioning to target positions which are lo-
cated at a distance of the half target range from the soft-
ware limit switches.
The limits are determined from:
 SLE–
1
/
2
target range for the positive end of the
linear axis
 SLS+
1
/
2
target range for the negative end of the
linear axis.
If you do not previously release the key, the FM 351
terminates at a target point which is located at the half
target range in front of the corresponding software limit
switch. All ranges, which are necessary for correct ter-
mination, are set by the FM 351 at this target point.
SLEMaximum target
Part of the working range in which no target position
may be located.
1
2
3
Switchover difference positive Switch-off difference positive
1 2 3
½ target range
Aborting Jogging
Speeds
Limit for a Linear
Axis
Operating Modes and Settings