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Opta, ModBus RTU: Fix headings #882

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Mar 3, 2023
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Opta, ModBus RTU: Fix headings #882

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4 changes: 2 additions & 2 deletions ...ns/solutions-and-kits/opta/tutorials/getting-started-with-modbus-rtu/content.md
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Expand Up @@ -34,7 +34,7 @@ The Modbus RTU protocol is one of the protocols available within Opta™. In thi

### Required Hardware and Software

### Hardware Requirements
#### Hardware Requirements

- Opta™ PLC with RS-485 support (x2)
- 12VDC/1A DIN rail power supply (x1)
Expand All @@ -43,7 +43,7 @@ The Modbus RTU protocol is one of the protocols available within Opta™. In thi
- STP/UTP 24-18AWG (Unterminated) 100-130Ω rated
- STP/UTP 22-16AWG (Terminated) 100-130Ω rated

### Software Requirements
#### Software Requirements

- [Arduino IDE 1.8.10+](https://www.arduino.cc/en/software), [Arduino IDE 2.0+](https://www.arduino.cc/en/software), or [Arduino Web Editor](https://create.arduino.cc/editor)
- If you choose an offline Arduino IDE, you must install the following libraries: `ArduinoRS485`, and `ArduinoModbus`. You can install these libraries via Library Manager of the Arduino IDE.
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