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Subject: Re: [ocpp] Groups - CR Unit of Measure - Currency
ISO 4217 delineates current currency designators and some more information around currencies. A currency symbol can optional be used based on the used character set within EVSE firmware. For a quick overview see Wikipedia’s explanation at https://en.wikipedia.org/wiki/ISO_4217. My recommendation is to use the ISO 4217 three character definitions. Kind regards, Stephan -- Stephan Voit KnGrid Inc. 65 Enterprise Aliso Viejo, CA 92656 Mail: svoit@kngrid.com Phone: +1 (949) 532-9254 From: <ocpp@lists.oasis-open.org> on behalf of Rish Ghatikar <rish@greenlots.com> Thanks, Brendan. That's absolutely fine, as long as we have a means to denote the currency -- that's the more IMPORTANT factor. Rish Ghatikar 156 2nd Street, San Francisco, CA 94105 M: +1 510 710 6552 http://www.greenlots.com From: ocpp@lists.oasis-open.org <ocpp@lists.oasis-open.org> on behalf of Brendan McMahon <Brendan.McMahon@esb.ie> Hi Rish, (All), I believe that using any currency symbols would not be a good idea, as only two are covered by ASCIII/ANSI code tables, so it would drop us deep into obscure parts of Unicode, an when you take the world overall, new currencies and/or currency symbols are not that rare. Whenever/however currencies are formally introduced into OCPP (as part of tariffing and pricing or otherwise), they should always be identified by the internationally standardized three letter upper-case currency codes (“USD”, “CAD”, “EUR” ,“GBP”, etc.). Best Regards, Brendan McMahon | Systems Architect | ESB ecars | T: +353 1 702 6708 / +353 87 662 2150 | www.esb.ie From: ocpp@lists.oasis-open.org [mailto:ocpp@lists.oasis-open.org] On Behalf Of Robert de Leeuw Hi Rish, (All) The current proposal is based on OCPP 1.6, DeviceModel and the discussion in LA. Without tariffing & pricing and don't see a use case for things like: $/kWh. or even $ etc. So I would propose that the Tariffing & Pricing proposal will have to add units that are fitting/needed. Complexity with adding things like: dollar, euro... then we will need to add them all. Which ofcourse can be done... I dont know the correct IETF/ISO/IEC standard, have to google it, but we should reference that specification in OCPP 2.0 IF we need a currency unit.. Kind regards, Hoge Ham 85 5104 JC Dongen John F. Kennedylaan 3 5555 XC Valkenswaard
2016-11-03 20:55 GMT+01:00 Rish Ghatikar <rish@greenlots.com>: As discussed, unit for "currency" is missing -- most of the dynamic pricing tariffs represent price of power and energy, for example, as, $/kWh or $/kW. Also, in certain instances "multiples" are used -- e.g., 2x, 4x, etc. that are indicative of the additional prices on top of the "normal" or "base" price that are determined between the utility and consumer. -Rish Rish Ghatikar From: ocpp@lists.oasis-open.org <ocpp@lists.oasis-open.org> on behalf of Robert de Leeuw <robert.de.leeuw@ihomer.nl> Submitter's message
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