Monthly Archives: May 2023

Updated: Arduino Opta

I ordered an Arduino Opta (RS485 version) and it has arrived – stay tuned for upcoming posts!

In the meantime, I’ve updated my initial review as it has been confirmed that the digital inputs support 24VDC. Programming support for IEC 61131-3 PLC languages has also been clarified (no MacOS support sadly).

Partnership with FinderDigital I/O uses 0-10VDC, not “standard” 24VDCHow will programming support for IEC 61131-3 PLC languages work? Via existing IDE?
DIN rail mountAnalogue inputs use 0-10VDC, not “standard” 4-20mACan programming be done over Ethernet?
IEC 61131-3 PLC language supportI/O expansion options?
(What does the “AUX” port do?)
Digital inputs support 24VDC (see here)
Beefy relay outputs with dedicated commons
Modbus-TCP and Modbus-RTU support
Input power supply is 12-24VDC
-20 °C to +50 °C temperature operating range