ADLINK PCI-8164 - Manual (Page 152)

140 Operation Theory
4.9 Software Limit Function
The card provides two software limits for each axis. The soft limit
is extremely useful in protecting a mechanical system as it works
like a physical limit switch when correctly set.
The soft limits are built on comparators 1 and 2 (Refer to section
4.7.1) and the comparing source is the command position counter.
A preset limit value is set in comparators 1 and 2, then, when the
command position counter reaches the set limit value, the card
reacts by generating the stop immediately or decelerates to stop
pulse output.
X
To set the soft limit: _8164_set_softlimit();
X
To enable soft limit: _8164_enable_softlimit();
X
To disable soft limit: _8164_diable_softlimit();
Note: The soft limit is only applied to the command position and
not the feedback position (Refer to 4.4). In cases where the mov-
ing ratio is not equal to 1, it is necessary to manually calculate its
corresponding command position where the soft limit would be,
when using _8164_set_softlimit().
Related functions:
X
_8164_set_softlimit(), _8164_enable_softlimit(),
_8164_diable_softlimit()
Refer to section 6.16