NPM PPCI7443, Руководство пользователя

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Operation Theorem
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4.1.10 Home Return Mode
In this mode, you can let the PPCI7443 output pulses until the condition to
complete the home return is satisfied after writing the command
_7443_home_move
(). There are 13 home moving modes provided by
PPCI7443. The “
home_mode” of
function
_7443_set_home_config()
is used to select one’s favorite.
After completion of home move, it is necessary to keep in mind that all the
position related information should be reset to be “0”. In PPCI7443, there
are 4 counters and 1 software-maintained position recorder. They are :
Command position counter: To count the number of pulses output
Feedback position counter: To count the number of pulse input
Position error counter: To count the error between command and
feedback pulse number.
General-Purposed counter: The source could be configured as pulse
output, feedback pulse, manual pulser or CLK/2.
Target position recorder: To record the target position
(Please refer to section 4.4 for more detail explanation about position
counters)
After Home move complete, the first four counters will be cleared to “0”
automatically. However the target position recorder won’t. Because it is a
software maintained, it is necessary to manually set the target position to
“0” by calling the function:
_7443_reset_target_pos(). So that, all the
positions information will be “0”.
The following figures show the various home mode and the reset point,
when the counter will be clear to “0”.