Board And Connectors > 37-Pin Connector X2 > Opto I/Os > Opto

Possibilities of use:

•Opto_Out_0 is predefined and cannot be used for any other purpose. It indicates marking in process (MIP) of the USC-3 and corresponds to the red LED and to the LED_MIP signal.

•Opto_Out_2 is semi predefined. It is mainly used to control a red pointer.

•The other four Opto_Outs (Opto_Out_1 and Opto_Out_3..5) can be used for various things like ScSetOutput control objects, status outputs, motion controller step and direction, shutter control, etc.

Logic circuit:

Opto_Out_Logic

Figure 13: Logic circuit diagram of an Opto_Out

•In the logic circuit the load is connected between an Opto_Out and Opto_GND.

•Only small output currents can be supplied in the logic circuit, because of the internal pull-up resistor of 4700 Ω. An external pull-up resistor can be used to increase the output current.

Relay circuit:

Opto_Out_Relay

Figure 14: Relay circuit diagram of an Opto_Out

•In the relay circuit the load is connected between Opto_VCC and an Opto_Out.

•Compared to the logic circuit, a much higher current is possible in the relay circuit.

•Relay circuits cannot be used for multiple inputs with common ground.

Output levels and max. current:

•To use the Opto_Out signals, a suitable power supply has to be connected to Opto_VCC and Opto_GND.

•All Opto_Outs are open-collector outputs with an internal pull-up resistor of 4700 Ω on a common anode. This means that the individual outputs cannot be operated with different voltages.

•The output levels and max. currents of the Opto_Outs depend on the circuit. The values are listed in chapter Electrical Characteristics.

Polarity:

•By default, the polarity of Opto_Outs is active low.

•Each Opto_Out can be inverted in the USC-2 settings and must be saved by the store button.

•Temporary inversions of Opto_Outs can be done by the FCI command OOUI.

Boot state:

•By default, the boot state of Opto_Outs is inactive.

•The boot states can be setup in the USC-2 settings and must be saved by the store button.

Check values:

•USC-2 settings

•CCI commands to Get Outputs and Set Outputs

•FCI command OOU

•USC Server > InfoView > Outputs and OutputInvertFlags