Schneider PM5110

[Anonymous user]

Hello friends, I have a big problem, 
I can't get PM 5110 meter information in  ABB RTUtill500 software, if you have a solution, please help me
rezagholami719@gmail.com

[Ramasamy_N]

Hello @Anonymous user 

Can you please check with ABB RTUtil500 technical support team, if there any option to create custom library using the Modbus register list of PM5110? (just like how we have custom library option for 3rd party devices in PME)

Regards, 

Ramasamy N

[BevanWeiss · Accepted solution]

Does RTUtil500 want the Holding Register with the 4xxxx prefix to it?

Given it labels it as 'Index' this seems unlikely.  So I would have expected it to just want 3000... or 2999, since the PM5110 Register List starts at Register 1, which is often 40001, i.e. Index 0..

The wonderful world of Modbus.

Your best path is to use some Modbus scanner software, and confirm that you can read from the PM5110 from your computer.

Then record what Modbus register was sent across the wire to get the desired values.

Then configure your computer as a Modbus slave and confirm that the ABB RTU is reading the expected register (across the wire) for your configuration.

It doesn't really matter what numbers are at each end, as long as the real across the wire numbers are correct.

i.e. if the PM5110 datasheet calls it register 3000, but your RTUtil500 software wants it called index 43000 or index 2999 that doesn't matter... 

[Anonymous user]

Thanks 

This method is not possible in rtutil software

[BevanWeiss]

You mean 

---

@Ramasamy_N wrote:

... option to create custom library using the Modbus register list of PM5110...

---

Is not possible in RTUtil.

However the options I provided you should all be valid to try, and report back on.

[Anonymous user]

Thanks Mr. @BevanWeiss  Finally, with your solution I got the information from the power meter.

I only have trouble reading the Power Factor and I did not get the correct amount in RTU. I will send a picture of this problem in the attachment.

[Ramasamy_N · Accepted solution]

Hi @Anonymous user 

The PF register values will be in the range of -2 to +2 and it required to convert using the logic showed in "Power Factor 1". 

You can also use the alternate registers starting from 3192 for PF total in IEC and Lead Lag formats (-1 to +1). 

Regards, 

Ramasamy N

[Anonymous user]

thanks mr @Ramasamy_N  

[BevanWeiss]

Did you resolve the PF issue?

That's a yucky format that they present.  But ahh well.

I think I would have preferred the standard +/- 1.0 lead/lag p.f. and then a separate register to indicate if the real power was 'forwards' or 'reverse'.  But I guess some people just want one value with all the info packed in.

It should have been readable as a floating point value all the same (32bits, two sequential modbus registers).

And then your code would need to decode the magic values.  Or you could read the separate standard p.f. values which I'm sure are at a different register set as mentioned by the other poster.