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:
| Pros | Cons | Unknowns |
|---|---|---|
| Partnership with Finder | Digital I/O uses 0-10VDC, not “standard” 24VDC | How will programming support for IEC 61131-3 PLC languages work? Via existing IDE? |
| DIN rail mount | Analogue inputs use 0-10VDC, not “standard” 4-20mA | Can programming be done over Ethernet? |
| IEC 61131-3 PLC language support | I/O expansion options? | |
| Beefy relay outputs with dedicated commons | ||
| Modbus-TCP and Modbus-RTU support | ||
| Input power supply is 12-24VDC | ||
| IP20 | ||
| -20 °C to +50 °C temperature operating range |
I’m hoping to buy one.