Datasheet

8 SIM23xx Motor Controller Datasheet Version 1.0 November 4, 2020

TABLE 2.

Connector

Pin Power Dout Com Pulse Ana Dinput

Default

Conﬁg

24 RC7 ANA7 DIN7 Unused

12 RC8 ANA8 DIN8 Unused

25 5VOut

13 GND

Note 1: Analog command is disabled in factory default conﬁguration.

Note 2: STO functionality only available in T versions. See STO section for details.

Note 3: Pulse input enable by default on ﬁrmware version prior to v2.0

Default I/O Conﬁguration

While the controller can be conﬁgured so that practically any Digital, Analog and RC pin can be used for

any purpose, 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 controller

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 priority order.

113

14 25

Pot 1

RS232

Ground

TxOut

RxIn

Motor Brake 1

Motor Brake 2

Contactor

Pot 2

RC Ch2RC Ch1

FIGURE 7. Factory Default Pin Assignment

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. Figure 9 shows suggested assignment of Pot 1 to ANA1 and Pot 2 to

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