Manual Reading of IEC1107 meter

The optical read-out head is used for data communication between a PC or hand-held terminal to energy meters, electricity meters and similar metering equipment with optical data port according to IEC 1107/EN 61107(according to the IEC1107 standard and a reading device equipped with RS232 or USB 2.0 port.). Applications range from simple data readings e.g. for billing purposes and comprehensive programming of meters.
An application("IEC1107 testing software Test1107pack.exe") from http://www.meter-test-equipment.com/index.php?page=download&lng=en  can be used for reading data from meter supporting  IEC1107  protocol.

Meter with optical port

Connect the cable's optical 'port end to the meter and RS232 DB9 cable to the PC. Through a any serial port emulator or Hyper terminal in windows,  enter the command according to IEC1107 protocol to read the meter data, most probably which may contains the historical data. But unfortunately the data or meter file read from different meters were different for different manufactures and make. 

/?!<0D><0A> could be the first command for initiate the data read.

Then  meter will respond with identification response and it may like ,

/LTA4L0506272    

After that we have to give a command to read meter file an that may be like

<06>040<0D><0A>

After  that we will receive  a series of characters which collectively forms the the historical reading of the mater. 

HHU(Hand held unit) for reading meter data

Some meters like LnT 's ERP300 comes with rs485 port that support IEC1107 protocol ,in that case command needs a device address to read the meter. Which supports  multidroping  and all.