Quantum Composers AF910 - Manual (Page 22)

Page 22 AF910 Manual Version 1.4
- Step Counter. The system uses an internal 32 bit position counter to keep track
of motor steps. This allows for step counts of ± 2,147,483,647. The position
counter is initialized when a homing sequence occurs or can be manually
zeroed as well. The SC command is used for both querying and resetting the
counter.
Figure 23 Step Counter
- Movement Functions. There are three ways to command the motor to move
when in manual movement mode: continuous, absolute and relative. A
continuous movement will continue to move unit a stop command is received.
It is up to the user to stop the motor when desired in this case. A CM
command is used to move continuously positive or continuously negative (jog
function). A ST command will stop movement. An absolute command will
move to the position given. This can be a positive or negative position. The
controller will determine the direction and number of steps to move until the
commanded absolute position is reached. A relative command will move the
number of steps given relative to the current step counter. The MV command
is also used for this function with the addition of the “+” or “-“ prefix to
indicated whether or not this is a positive or negative relative step command.
Figure 24 Motor Movements
- Automatic Mode. This mode will enable the motor to move based on the
position calculations from the sensor. The motor will automatically move and
determine direction in order to maintain focus on the sample. The AM
command is used to enable and disable this function. When in automatic mode
all manual movement commands will be ignored and responded to by
returning a “?3” error.
Figure 25 Motor Drive Mode