Datasheet

SDC21xx Motor Controller Datasheet 7

Enabling Analog Commands

ence of a valid command signal in the following order: 1-RS232, 2-RC Pulse, 3-None. If needed, use the Roborun+

PC Utility to change the pin assignments and the command priority order.

Enabling Analog Commands

For safety reasons, the Analog command mode is disabled by default. To enable the Analog mode, use the PC

utility and set Analog in Command Priority 2 or 3 (leave Serial as priority 1). Note that by default the additional

securities are enabled and will prevent the motor from starting unless the potentiometer is centered, or if the

voltage is below 0.25V or above 4.75V. The drawing shows suggested assignment of Pot 1 to ANA1 and Pot 2 to

ANA4. Use the PC utility to enable and assign analog inputs.

CAN Bus Operation

The controller can interface to a standard CAN Bus network, using 3 possible protocols: Standard CANOpen, and

two simplified proprietary schemes (MiniCAN and RawCAN). Please refer to the User Manual for details. USB and

CAN cannot operate at the same time. The controller starts up with CAN available, but CAN will be disabled as

soon as the controller is plugged into USB. To re-enable CAN, disconnect USB and restart the controller.

USB communication

Use USB only for configuration, monitoring and troubleshooting. USB is not a reliable communication method

when used in a electrically noisy environments and communication will not always recover after it is lost without

unplugging and replugging the connector, or restarting the controller. Always prefer RS232 communication when

interfacing to a computer.

Spektrum Satellite Receiver Connection

3-pin plug is provided for direct connection to a Spektrum SP9545 miniature receiver.

915

Pot 1

RS232

Ground

TxOut

RxIn

Safety Contactor

Motor Brake

Pot 2

RC Ch1RC Ch2

FIGURE 13. Factory default pins assignment