UCDualStepper Firmware
The UCDualStepper firmware is designed to allow our UCC30xx series of current regulating controllers to operate two stepper motors independently of each other.
The following table summarizes the currently released product key capabilities.
| Product | Unipolar | Bipolar | Current/Winding with 2 motors | Motor Voltages |
| UCC3005 | x | 0.1-0.5 Amp | up to 46 | |
| UCC3015 | x | 0.3-1.5 Amp | up to 46 | |
| UCC3030 | x | 0.6-3.0 Amp | up to 46 |
The UCDualStepper key capabilities may be summarized as follows:
- Up to two stepper motors may be independently controlled at one time.
- Control includes the ability to specify the current to use on the motor windings.
- Limit switches may be used to automatically request motion stop of either motor in either direction.
- Rates of 1 to 31,250 microsteps per second are supported.
- Step rates are changed by linearly ramping the rates; the rate of change is independently programmed for each motor, and can be from 1 to 41,667 microsteps per second per second.
- All motor coordinates and rates are expressed in programmable microstep units of 1 to 1/8 of a full step. Once the base step size is selected, changing stepping modes between half, full and micro does not change any other value other than which winding pairs may be driven at the same time.
- Motor coordinates are maintained as 32 bit signed values, and thus have a range of –2,147,483,647 through +2,147,483,647.
- Both GoTo and Slew actions are fully supported.
- A TTL "busy" signal is available, which can be used to see if the motors are still moving. Note that this information is also available from the serial communications subsystem.
- Simple control of the motors may be done by switch closure: i.e., each motor can be told to slew left or right, or to stop by simply grounding some input lines. Similarly, the rate of motion can be controlled via stepping through a standard set of rates via grounding another input.
- Complete control of the motors, including total monitoring of current conditions, is available through the 2400 or 9600 baud serial connection. If you purchase a USB-to-serial conversion cable with drivers, you may also operate our products via USB.
- An additional mode is available which allows an external computer to directly generate step sequences on the motor control lines. Up to31,250 microsteps per second may be requested. This mode gives you control over which edge of the pulse "triggers" the step, and it allows you to either use "Step" and "Direction" lines to request a step for a given motor, or to have a separate "Step" line per possible direction of each motor.
- May be run off of a single user-provided 7.5 to 15 volt DC power supply. Alternatively, each motor may have its own supply, from 7 to 46 volts, while the logic circuit runs off of a 7.5 to 15 volt DC supply.
- Theoretically, an unlimited number of boards can be controlled via one serial line, if the SerRoute product is used.
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