In almost every Thermal Printers ( Eg: E-POS ECO250, E-POS TEP-220MC ) , We can check the all configuration details by printing a test page from the printer itself. I will explain the steps to make a test print.
1. Turnoff the Power button in the thermal printer.
and you can see a feeder switch on the front or side of the printer.
2. Press and hold the feeder switch and turn on the power switch of the printer, after 2 seconds release the feeder switch.
within 1 second, printer will start to print the configuration page.
in that configuration page you will get the current IP address of that printer
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