Hi Bill and Robert,
No I meant the pulse, I thought it would be the pulse coming out digitally from RS485 port.
When I was searching old threads about RS485, I found in this thread a [datasheet] (http://www.kwhmeter.nl/Files/2/26000/26485/Attachments/Product/0W0WYD4F0u5512V902W1wbP085j60214.pdf) of a power meter made in china with RS485 port. I did not notice in the datasheet that there are two ports: pulse port and RS485 port, until Bill replied with the above and I checked the datasheet again and saw that ports in the datasheet.
So how the data will look like so that it can be interpreted as energy? I read the datasheet but it is not clearly explained.
EDIT:
Ah the datasheet said: “RS485 output for Modbus RTU”. So there must be registers for the absolute meter reading, instantaneous power, etc, is that correct? The problem is the datasheet does not provide any information about data addresses / registers to access the data?