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166 AX3500 Motor Controller User’s Manual Version 1.9b. June 1, 2007
*96
*97 - Least Significant Byte
Address: *98 - Most Significant Byte Destination 2
*99
*9A
*9B - Least Significant Byte
These two 32-bit (4-bytes) registers are used to store the desired destination when the
controller is used in position mode. These registers should always be set using the mailbox
mechanism described above. See “Using the Encoder to Track Position” on page 85 for a
complete description of the position mode.
Distance 1 and 2
Address: *9C - Channel 1
*9D - Channel 2
These registers contain a signed 8-bit value (-127 to +127) that represents the distance
between the current counter position and the desired destination. This number is com-
puted using a formula described in section “Using the Encoder to Track Position” on
page 85.
Speed 1 and 2
Address: *9E - Channel 1
*8F - Channel 2
These registers contain a signed 8-bit value (-127 to +127) that represents the motor speed
relative to a maximum speed, which in turn depends on the number of encoder counts and
time base settings as described in “Using the Encoder to Measure Speed” on page 84.
Time Base 1 and 2
Address: *A2 - Channel 1
*A3 - Channel 2
These registers contain the timing information for measuring the speed. See “Using the
Encoder Module to Measure Distance” on page 84 for a detailed description.
Encoder Threshold
Address: *A4
This register is not used in the AX3500 as threshold is fixed at 2.5V in this model. See
“Voltage Levels, Thresholds and Limit Switches” on page 81 for a detailed description.
Distance Divider
Address: *A5
This registers contain the divider ratio that is applied to the difference between the current
position and destination. See “Using the Encoder Module to Measure Distance” on
page 84 for a detailed description.