Arduino Opta RS485 Micro PLC (Ethernet, USB-C, RS-485)
Secure micro PLC with STM32H747XI dual-core MCU, Ethernet, USB-C, and RS-485, supporting Arduino sketch and IEC 61131-3 PLC languages. Adds half-duplex RS-485 for fieldbus sensor networks compared to the Opta Lite. Supports secure boot and OTA firmware updates.
Pinout
- 12–24VDCType · Power
- GNDType · Ground
- I1Type · Signal
- I2Type · Signal
- I3Type · Signal
- I4Type · Signal
- I5Type · Signal
- I6Type · Signal
- I7Type · Signal
- I8Type · Signal
- Q1Type · Signal
- Q2Type · Signal
- Q3Type · Signal
- Q4Type · Signal
- ETHType · Signal
- RS485 AType · Signal
- RS485 BType · Signal
| Pin | Type |
|---|---|
| 12–24VDC | Power |
| GND | Ground |
| I1 | Signal |
| I2 | Signal |
| I3 | Signal |
| I4 | Signal |
| I5 | Signal |
| I6 | Signal |
| I7 | Signal |
| I8 | Signal |
| Q1 | Signal |
| Q2 | Signal |
| Q3 | Signal |
| Q4 | Signal |
| ETH | Signal |
| RS485 A | Signal |
| RS485 B | Signal |
Pin details
17 connections- 12–24VDCPower
- GNDGround
- I1Signal
- I2Signal
- I3Signal
- I4Signal
- I5Signal
- I6Signal
- I7Signal
- I8Signal
- Q1Signal
- Q2Signal
- Q3Signal
- Q4Signal
- ETHSignal
- RS485 ASignal
- RS485 BSignal
Start wiring
Ethernet · UART · SPI · Shield
Module pins: 12–24VDC, GND, I1, I2, I3, I4, I5, I6. Schematik maps them to your board in the app.
Wired comms
118 other optionsW5100/W5500 Ethernet shields, LAN8720 RMII PHY boards, MAX3243 RS-232 level shifters, isolated USB-to-RS485 converters, CAN FD bridges, and passive or active PoE injectors and splitters.
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