PLC verification development board

The main IC of the PLC verification development board is STM32F103VET6, and the 512KB capacity PLC programming can reach 12,000 steps. This board has 12 input IO ports and 12 outputs. Each port is equipped with an LED indicator light. During the experiment, it is clear whether there is any action on that port. The board is powered by 5V and is directly compatible with the computer USB port. Use this board debugging program to directly power the computer and add an additional wireless power supply. Each input channel is isolated by optocoupler, which has strong anti-interference ability. BOOT0 is lead out on the board, which is more convenient for programming the underlying source code. SWD is also lead out separately, which is more convenient for downloading, debugging, and simulating the underlying program! There are also 3 indicator lights: running, error, and communication. Displays the status when debugging the PLC program. Using the MAX3232 chip and the 9-pin DB female connector, you can program the underlying program and download the PLC program and simulation. It can also be seen that this PLC development board is a small PLC! Only the output terminal is missing. Hot red operation... One optocoupler is soldered crooked... Here is a small experiment and a little idea. There are 3 indicator lights PWE RUN ERR in the lower right corner of the board. 3 LED lights are soldered on the bottom and reverse soldered. The 3 lamp holders are not covered. Copper, the light shines up from below, similar to the isolated light strips on some computer motherboards now, a small success, quite beautiful, see the video effect below, YE.... The PLC open source underlying source code is attached below, and the PLC open source underlying source code is attached below. The following comes with the PLC open source underlying source code, which is a great benefit.