Data Sheet

RGDC18xx Motor Controller Datasheet 7

Battery Backed Clock and RAM

After the controller is powered on, the Power LED will tun on, indicating that the controller is On. The Sta-

tus LED will be ﬂashing at a two second interval. The ﬂashing pattern provides operating or exception sta-

tus information, as shown in Figures 7, 8, and 9:

RS232/USB Mode

Idle - Waiting for Command

RC Pulse Mode

Analog Mode

Under or Over Voltage

Power Stage Off

Short Detected

Overheat

FIGURE 7. Normal Operation Flashing Patterns

RS232/USB Mode

Idle - Waiting for Command

RC Pulse Mode

Analog Mode

Under or Over Voltage

Power Stage Off

Short Detected

Overheat

FIGURE 8. Exception or Fault Flashing Patterns

Additional status information may be obtained by monitoring the controller with the PC utility. The commu-

nication LED gives status information on the CAN and USB, as shown in Figure 9:

Always off: No USB, No CAN

Always On: USB Active, No CAN

Flashing On: No USB, CAN Enabled

Flashing Off: USB Active, CAN Enabled

FIGURE 9. Communication LED

Battery Backed Clock and RAM

The controller includes a real-time clock/calendar and RAM storage for user variables. Both the clock and

the RAM storage require a battery to continue running and for the stored data not to be lost while the

controller is powered down. The battery is not installed by Roboteq. Users who wish to use the clock and/

or battery backed RAM variables must install a battery themselves. The battery socket can be reached by

removing the 6 screws that are holding the cover. Lift the cover to reach the board and insert a 3V, 12.5mm

coin-style battery. Use battery type CR1225 or equivalent.