Wiring Online Switch & Safety Stop

• Online and Emergency Switches: For reliable operation, ensure an online switch and an emergency switch are connected. These can be integrated via button boxes, handheld devices, or directly to the PCB.

• Connection Precautions: If connecting directly to the PCB, ensure there is no exposure to voltage levels higher than the rated 3.3V to avoid damage to the MCU.

• Signal Pin Configuration: Both signal pins connect directly to the MCU. There is no protection applied, so ensure not to apply any external voltage to avoid damage.

• Voltage and Signal Level: The pins are internally pulled high to 3.3V. To trigger a signal, connect these pins to ground (logic low).

for connections to the pcb for diy button/switches please refer to this chapter:

Board Overview/Connectors

connect Online Switch and a Safety Stop Switch this way:

pcb button wiring

for boards ordered with LCD-Display and Encoder on the PCB there is an extra screw terminal on the back side of the pcb soldered