Data Sheet

Commands and I/O Connections
GDC3xxx Motor Controller Datasheet 7
TABLE 2.
Connector
Pin Power Dout Com Pulse Ana Dinput
Default
Config
3 RS RxD RS232Rx
16 RC2 ANA2 DIN2 RCRadio2
4 RC3 ANA3 DIN3 AnaCmd1 (1)
17 RC4 ANA4 DIN4 AnaCmd2 (1)
5 GND
18 DOUT1 Motor Brake 1
6 DOUT2 Motor Brake 2
19 DOUT3 Contactor
7 DOUT4 Unused
20 CANH Unused
8 CANL Unused
21 RC5 ANA5 DIN5 Unused
9 DIN9 Unused
22 RC6 ANA6 DIN6 Unused
10 DIN10 Unused
23 485+ RS485+
11 485- RS485-
24 RC7 ANA7 DIN7 Unused
12 RC8 ANA8 DIN8 Unused
25
PwrCtrl
13 GND
Note 1: Analog command is disabled in factory default configuration.
Default I/O Configuration
While the controller can be configured so that practically any Digital, Analog and RC pin
can be used for any pur pose, the controller’s factory default configuration provides an
assignment that is suitable for most applications. The figure below shows how to wire the
controller to two analog potentiometers, an RC radio, and the RS232 port. It also shows
how to connect two outputs to motor brake solenoids and another output to an external
status LED. You may omit any connection that is not required in your application. The con-
troller automatically arbitrates the command priorities depending on the presence 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 prior ity order.