Update plugin_sofar_old

[kkubicki]

• Remove special characters from serial number
• Update entities parameters

These changes I had to make to have full support from HA energy dashboard with my Sofar 2200TL-G3.
I've noticed that the inverter reports serial number with leading two special characters (same for SB1 and SM1E series I suppose):
<00><0C><53><41><33><45><53><32><32><32><4E><33>
I mitigate this issue by stripping seriesnumber from special characters.

@wills106 If you feel this is too extensive change, I can extract it to separate plugin.

[wills106]

seriesnumber.count was only intended as a quick fix for #522 (reply in thread)

I didn't realise the energy dashboard wasn't fully working on sofar_old as no one has reported it.

[kkubicki]

Yeah, it is probably Product code that is always sent prior serial number, I tried to get it from other address (0x2003, 0x2004) but the result is the same.

In my case, Today and Total Production was missing from the Solar energy sources list.

[kkubicki]

@wills106 I have seconds thoughts regarding ActivePower change from KILO_WATT_HOUR to KILO_WATT (this change applies only to X3 inverters, for X1 ActivPower was already KILO_WATT). I do not know what is the correct unit for this parameter, in my case (X1 inverter) it seems to be actual power sent out so kW makes more sense.
There seem to be some confusion regarding this, some plugins use kWh, other ones kW...

[wills106]

kW tends to be used for Grid connected like import / export. Edit: I meant to say realtime import / export. Historic like daily or yearly tends to be in kWh. Atleast on the SolaX

kWh used for transfer to and from battery. Edit: and historic like above.

I haven't pushed it out as a release yet, so you can relook at it and see what fits best.

[wills106]

On my SolaX some realtime:

Daily totals / historic:

Does the Sofar LCD give some pointers?

[kkubicki]

It is a very simple inverter, LCD has only a couple of lines. Here's excerpt from manual:

Standard display
This shows a rolling display of the DC voltage/current (PV1), energy
yields (today/total), grid voltage and current, as well as the status.

I can push another commit that restores previous settings for X3 inverters, and leaves X1 changes only. That would be safest thing to do, I do not want you to have extra work because of my changes. On the other hand, unit of Power is kW, not kWh after all.