S7-1200 & Symbol LS2208 Barcode Reader Troubleshooting

Hello, I understand you're facing issues reading barcodes with your S7-1200 CPU (212-1AD30-0XB0), RS232 module (241-AH30-0XB0), and Motorola Symbol LS2208 barcode reader.

Here's a checklist to help resolve this:

• RS232 Configuration: Verify correct COM port settings (baud rate, parity, data bits, stop bits) in both the S7-1200 configuration and the barcode reader. Typically, LS2208 uses 9600 baud, 8 data bits, No parity, 1 stop bit.
• Wiring: Double-check the RS232 cable connections between the reader and the module. Ensure correct pin assignments (TX, RX, GND).
• Barcode Reader Configuration: The LS2208 may require configuration via its programming manual to output data in a format compatible with your PLC.
• PLC Program: Confirm your S7-1200 program is correctly configured to receive and process serial data.
• Communication Test: Use a serial communication terminal program (e.g., PuTTY) to test the barcode reader independently of the PLC.

For detailed configuration information and FAQs, please refer to these resources:

• Siemens Industry Online Support - S7-1200 Serial Communication
• Zebra (Motorola) LS2208 Support

If the issue persists, please provide your TIA Portal version and a snippet of your serial communication code for further assistance.