Search found 7 matches

by ianf
Tue Jan 08, 2013 11:59 pm
Forum: Developers Sandbox - Meter Data
Topic: Very odd readings
Replies: 3
Views: 4704

Re: Very odd readings

I've just tried reading meter data using EKM Dash and it's refusing to read anything other than the "General" and "Advanced" tabs (it complains when I click on rates and Data). Yes, that will most likely be the iSerial TCP retransmit bug I mentioned in another thread. You're possibly getting a larg...
by ianf
Tue Jan 08, 2013 11:54 am
Forum: Developers Sandbox - Meter Data
Topic: Very odd readings
Replies: 3
Views: 4704

Re: Very odd readings

I had something similar happen to one of my meters where some of the internal settings were corrupted by a slew of power failures and brown-outs. If your kWh counter now runs at a different rate you have the same issue I had (mine ran at 1 tenth pace). Setting the CT ratio back to the original value...
by ianf
Fri Jan 04, 2013 11:32 am
Forum: Developers Sandbox - Meter Data
Topic: CRC16 help
Replies: 8
Views: 13558

Re: CRC16 help

I'm trying to get the CRC16 algorithm going in Java... but I must admit bitwise operations aren't my strong point. This is what I've done with the EKM-provided CRC16 C-code (an attempt to translate it to Java) : public int ekmCheckCrc(byte[] dat) { int crc = 0xffff; for (int i = 1; i < dat.length-3...
by ianf
Fri Jan 04, 2013 4:28 am
Forum: Developers Sandbox - Meter Data
Topic: EKM-Omnimeter RS-485 Data
Replies: 44
Views: 58303

Re: EKM-Omnimeter RS-485 Data

2. The Maximum Demand field is 8 bytes, not 7. EKM-- 2. Thank you very much for catching the typo! The Maximum Demand is 8 bytes in the EKM-Omnimeter return string. We really appreciate the heads up and will update this document. I'd like to correct this further. It appears that the Maximum Demand ...
by ianf
Sat Jul 07, 2012 2:16 pm
Forum: Developers Sandbox - Meter Data
Topic: EKM-Omnimeter RS-485 Data
Replies: 44
Views: 58303

Re: EKM-Omnimeter RS-485 Data

Jameson wrote: EKM-- 1. I think you may be referring to the 4 different time periods the meter returns. The Omnimeter itself keeps track of how many kWh both Total and Reverse have been used in each of 4 time periods.
Ah, silly me. I was thinking phases, not ToU.

Ian
by ianf
Fri Jul 06, 2012 12:02 pm
Forum: Developers Sandbox - Meter Data
Topic: EKM-Omnimeter RS-485 Data
Replies: 44
Views: 58303

Re: EKM-Omnimeter RS-485 Data

I have a couple of questions and comments after reviewing the V3 meter parsing document. 1. The example shows energy accumulation for 4 transformers. Which meter has a 4th CT input? 2. The Maximum Demand field is 8 bytes, not 7. 3. WRT the date. Capturing network data yields: 0157 3102 3030 3630 283...
by ianf
Fri Jul 06, 2012 1:56 am
Forum: Developers Sandbox - Meter Data
Topic: EKM-Omnimeter RS-485 Data
Replies: 44
Views: 58303

Re: EKM-Omnimeter RS-485 Data

Jameson,

Thanks for the information. Do you have a full protocol specification for the meter comms - We need to be able to write configuration to the meters as well as retrieve the time of use and schedule accounting information..

Ian