Quantum Composers AF910 - Manual (Page 21)

AF910 Manual Version 1.4 Page 21
Figure 19 Motor Home Speed
- Limit Switches. The limit switches will stop motor movement when activated.
They also serve as a reference, or home position when using the motor home
function. The limit switches can be configured as active high or active low.
The limits sensor inputs are internally pulled high to a 5V level. The default
setting is active low. The motor configuration register contains the option for
active high or active low limits. See the MC command for details. The limits
can also be disabled if needed. The LD command performs this function. By
default, the limits are enabled. The limits can also be swapped in function by
setting the appropriate option in the motor configuration register.
Figure 20 Limit Switch Setup
- Homing Function. The system can automatically perform a home sequence so
that the position counter can be initialized to a known position (the limit
switch). When initiated by issuing the HM command, the motor will begin to
move at the home speed set by the HS command towards the “A” or positive
limit switch. Once this limit is reached, the motor will slowly back off of the
limit to accurately determine the limit position and zero the step counter. The
motor will then move to a post home position which is set by using the PH
command. The limit that the home sequence moves to can also be reversed by
setting the option in the motor configuration register.
Figure 21 Home Function
Figure 22 Reverse Homing