I have single phase energy meter, which is having optical port option. by using this port I need to read the data's. I really don't have any idea how to read it please help me.
Energy meter Image is attached for reference.
My ultimate Idea read the energy meter data and display in computer using hyper-terminal
If it is a "real meter" you are not supposed to fiddle (finger) it- perhaps you can attach a camera in front, take pictures at regular intervals, use character recognition software to read the numbers and then do your own processing.
Apart from that, I cannot recognize any optical port (what does it mean exactly?)
It may have a pulsed infrared led, like a TV remote control.
Try taking a movie of it with your phone camera, these usually have fairly decent infrared response, and up close with the camera, you might just be able to see one of those clear leds flashing.
Its then a case of monitoring it with a photo transistor and an oscilloscope, and trying to figure out the data bit rate, and what it may be trying to tell you.
If the IR option is installed and working, please follow #3 suggestions. Once you are sure that the IR pulses are being produced, you need to use a photo transistor or a simpler photodiode to pickup the pulses. Connect it to the RS232 port and see if you can make out any data.