User Manual

Here is the list of components if you

have purchased the optional

Designer’s Kit:

• USB to RS232 converter card

• A switch push button

• Opto Sensor

• A USB 6 foot long cable

RMS part number: USBKIT

Default Settings

Function (command) Description

Running Current (m) 30% of 2.0 Amps

Holding Current (h) 10% of the max current of 2 Amps

Step Resolution (j) 256x

Top Velocity (V) 305175 pps (microsteps/sec)

Acceleration (L) L=1000, 6103500 μsteps/sec

Position 0

Microstep smoothness (o) 1500

Outputs (J) Both are turned off, J0

Baud Rate 9600 bps

Table 1: Default Settings

2. ELECTRICAL SPECIFICATIONS

Supply Voltage: +12 to +40 VDC

Peak Current: 0.1 to 2.0 Amps

Digital I/O Specifications

Number of I/O 2

Number of Inputs 2

Input Voltage +0 VDC to +5 VDC (0 to 24V tolerant, but 5V recommended)

Input Current 700 mA

Pull-up Resistors 10k Ω

Protection Static Protection to the microprocessor

LED output (Pin 9) max of 20mAmps, with 200 ohm internal resistor

3. OPERATING SPECIFICATIONS

Maximum Step Frequency 2^24 (pps) or 16.7MHz

Operating Temperature Range 0° to 50° C

RMS Technologies Page 6 Version 1.05

R256 Controller Manual 4/3/2009