3-Wire RS232 MAXI Automation

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ghita
Posts: 1
Joined: Mon Aug 10, 2020 1:52 pm

3-Wire RS232 MAXI Automation

Post by ghita » Mon Aug 10, 2020 2:06 pm

Does Controllino have an RS232 interface?
I am trying to connect to a 3-wire RS232 interface with pinout: GND, RxD, and TxD.

The RS232 voltage levels are -15v : +15v. What is the proper way to shift the voltage levels to 0-24v of controllino TX and RX pins?

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Lukas
Posts: 75
Joined: Tue Dec 18, 2018 3:44 pm

Re: 3-Wire RS232 MAXI Automation

Post by Lukas » Mon Aug 10, 2020 2:57 pm

Hello,

MAXI Automation has no RS485 or RS232 interface.

It has only 5V UART interface on the pin header. So you need an external UART to RS232 converter.

Standard MAXI and MEGA CONTROLLINOs have RS485 interface at the screw terminal. There you will need RS485 to RS232 converter.

Best regards,
Lukas

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