SecretSquirrel Senior Member Joined: 20 Jun 2004 Posts: 3 Location: New Zealand Expertise: I live coffee
Espresso: Jura X90
Posted Sun Jun 20, 2004, 7:02pm Subject: Jura X90 - diagnostic port
Hi all, we currently use a Jura X90 here at work and run the thing on an honesty basis where people just tick up the cups they've taken as they have them... it works really well, except people forget to mark up the cups. Sometimes 4-6 per day out of 25 odd cups in total. Other times it's only 2 per week out of 150...
The hardware/electronics and software aren't a problem, but I'm trying to find out what functionality is available via the machine's diagnostic port on the front. At the moment, all I want to do is disable the five cup selections at will, and that's essentially it. Piece of cake to hardwire it... but then I'd void the warrenty.
We don't go through enough coffee to be able to warrent using one of the pre-made purchase systems, which don't allow you to run a floating debt/credit system anyway. By not having to 'pay' when the person takes the coffee, it is perceived as not being 'real' money... until they find they're $20 down :) I don't make a cent off this, I just manage the machine for the group. There's nothing in this for me at all, it'd just make it easier to balance things up every few weeks if not so many cups went walkies.
Any ideas? Has anyone managed to interface with the port before? RS232? Andy idea what the protocol is? Sorry, this is kind of a techy question but I don't really know where else to put this :)
gilkatho Senior Member Joined: 23 Nov 2003 Posts: 18 Location: MILTON Expertise: I love coffee
Posted Wed Aug 11, 2004, 4:35am Subject: Re: Jura X90 - diagnostic port
Have you explored the Audit function in the programming? When you display the main total count, you can then press the individual drink keys to maybe find out which keys are falling short. Also take note that these audit readings are in brewing cycles, a '1' increment on a two-cup key could have been two drinks.
The rear port is an RS232 port but uses a proprietary protocol. By default, the port at the rear of the machine isn't actuallly connected in the X90 machines unless you want to use the payment system. (the diagnostic port is on the front.) To enable the rear port you have to connect the interface board to the main power board to enable any functionality from that port. There are two possible internal connections depending upon the firmware level of your machine.
As a Jura agent, I've looked closely at the payment systems (smart card/stored value & coin mech) and once again they use a proprietary write-once Motorola (from memory) processor so can't be reverse engineered. (I think we are the only agent in Australia to have sold the smart card system www.gilkatho.com.au/shop/Scripts/prodView.asp?idproduct=34, but I'm happy to be corrected on that one.)
As a matter of interest there is also another data port on the X90 which we use for the diagnostic reports. It is the one at the base of the programming front panel. Once again it is a proprietary port and needs a special interface box. The diagnostic software that we get with the kit is super and really helps the tech understand how a machine is performing.
Other ideas for controlling the leakage of free drinks...
i) Publish the stats each week near the machine ii) Keep replacing the tally sheets with clean sheets, makes them look empty and obvious when people forget to make the mark. iii)Run out of coffee occassionally while you have to scout around for enough cash to buy the next bag.
Let me know if we can help with any more info on the above topics.
You will also find other useful tips on the Jura Impressa X90 in out Frequently Asked Questions at www.gilkatho.com.au/faqs
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