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STD RS232-TTL Interface
Project Status:
Ongoing
License: Public Domain
- 0
Description
The circuit matches the RS232 signal of a PLC to the TTL level of an Arduino.
By means of a pin header the Arduino is attached to the PCB.
Through the D-SUB connector a connection with the PLC is established.
Further IO is provided by PCB terminals from WAGO:
X2: 5V
X3: Arduino D2
X4: GND
Furthermore, a potentiometer was installed to be able to apply a variable level to A0.
The MAX232 was used according to the typical application.
Design Drawing
schematic diagram
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PCB
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