Monthly Archives: November 2022

Initial Thoughts: Arduino Opta

Arduino have announced a new micro PLC, the Opta, and while some details are unclear, it seems like a pretty neat product. Here are my initial thoughts:

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?
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

I’m hoping to buy one.