DFROBOT RS232 SHIELD

Has anyone use DFRobot RS232 Shield with Uno to receive RS232 data? I'm trying to use this RS232 Shield to receive RS232 data from a RFID reader. But seems like it did not work.

I'm wondering am I using this shield correctly or this shield is only use for converting UART to RS232 not vice versa?

Hope someone can help me on this.

Thank you.

Regards, Nick

I'm wondering am I using this shield correctly

As you don't say how you are using it, then it is impossible to tell if you are using it correctly.

Having read your other thread on this problem I assume you are not using it correctly but that thread had scant details as well.