FM-3 Programming Module Reference Manual

Rollover value and then reset to zero and continue to count up. If rotating in the negative direction, the master position feedback will decrease until it reaches zero, and then start over at the Rotary Rollover value.

Master Distance Units

The parameters in this group are used to establish the scaling of the master axis into user units.

Units Name

This is a text string up to 12 characters that will be used to define the units of distance traveled by the master axis for incoming synchronization signals.

Decimal Places

The number of decimal places set in this parameter determines the number of digits after the decimal point used in all distance and position parameters used in synchronized motion throughout the software. Using a high number of decimal places will improve position resolution, but will also limit the maximum position. You can select from zero to six decimal places of programming resolution.

Scaling

The scaling factor is defined as MasterAxis.CharacteristicDistance / MasterAxis.Counts. The numerator (top value of the scaling fraction) is the Characteristic Distance. The denominator (bottom value of the scaling fraction) is the # of Counts. The Characteristic Distance is the number of Master Distance Units that will be traveled per number of counts in the bottom of the fraction. The Counts parameter is the number of incoming pulses it takes to travel the characteristic distance.

Master Velocity Units

Decimal Places

Decimal Places determines the number of decimal places to be used in the velocity parameter for all synchronized motion.

Master Acceleration Units

Decimal Places

The number of decimal places set in this parameter determines the number of digits after the decimal point used in all real-time accel/decel parameters used for synchronized motion throughout the software. Using a high number of decimal places will improve accel/decel resolution, but will also limit the maximum accel/decel rate. You can select from zero to six decimal places of programming resolution.

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Emerson FM-3 manual Master Distance Units, Master Velocity Units, Master Acceleration Units