This application shows two ways to exchange data via a serial port between PC (Windows/Linux) and the IOT2050. In the first example a pure serial transmission is used, while in the second example the communication protocol Modbus RTU is used additionally.
The following hardware components are required for the application:
- SIMATIC IOT2050 Advanced or Basic
- USB to Serial Converter (in this example: DIGITUS USB 2.0 to serial Converter, RS485 incl. USB A Cable 80cm)##
- Example 1: Virtual Machine with Linux OS on Windows PC: In this example VMWare Workstation 16 Player and Linux Debian 10 is used
- working internet connection on the VM
- install picocom with the terminal-command 'sudo apt-get install picocom' (in this manual version 3.1 is used)
- Example 2: PyModSlave on Windows PC: You can download it here (in this manual version 0.4.4 is used)
You can find the instructions for preparing the IOT2050 and the both examples in the following links:
- Prepare the IOT2050
- Example 1: Sending ASCII-characters using a serial connection
- Example 2: Sending array-packages using modbus-protocol
| Topic | |
|---|---|
| 1 | SIMATIC IOT2050 forum: https://support.industry.siemens.com/tf/ww/en/threads/309 |
| 2 | SIMATIC IOT2050 Getting Started: https://support.industry.siemens.com/tf/ww/en/posts/238945/ |
| 3 | Operating Instructions: https://support.industry.siemens.com/cs/ww/en/view/109779016 |
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