The info you provide is very terse.
“SF6” is probably http://www.sanfranroaster.com/sf-6lb <http://www.sanfranroaster.com/sf-6lb>
And “Watlow" I assume to mean http://www.watlow.com/products/controllers/temperature.cfm <http://www.watlow.com/products/controllers/temperature.cfm>
My hunch is you maybe just connected the cables without making sure that variables like baud speed, even/uneven, parity, stopbits are all set exactly the same on both ends.
SF should be providing that info / assistance in their manuals / service desk.
Frans
> Op 29 sep. 2015, om 02:28 heeft Nate White <wcrcompany(a)gmail.com> het volgende geschreven:
>
> Which is Modbus Error: readfloat() Modbus Error: [connection] failed to connect [rtu baud[9600]] Aline 23885
>
> This is on an SF6 with Watlow. I'm sure this is a stupid question, my apologies.
>
> Nate
> _______________________________________________
> Artisan-User mailing list
> Artisan-User(a)lists.einfachkaffee.de
> https://lists.mokelbu.de/listinfo/artisan-user
Hi,
with Artisan 1.1.02 I get this error
Modbus Error: writeSingleRegister() 'ModbusSerialClient' object has no attribute '_last_frame_end'@line 30440
and have no communication with my rs485 device. I have tried Artisan 1.0.0 on the same machine same interface
and have no communication problems.
Best
Frank
> During real time roasting , is there any way that events (TP, FC etc) show up
> on the specific time moments on BT curve, without having to press the respective events buttons?
In the Events menu these can be active:
Then, CHARGE and DROP are automatically marked as well as TP.
FC can not be truly autodetected without a listening device. Some roasters have experimented with it.
But you can use this:
Then FC is marked at the temperature that you have established that FC usually happens.
Frans
> On 18. Sep 2017, at 22:03, electra dedoussi <ededoussi(a)gmail.com> wrote:
>
> l What is the meaning of the light blue curves that show up on the background of the IVORY CITY PLUS 6 KIL coffee roasting profile? Is it a kind of interference?
Looks to me as if you loaded a profile in the background (named "93 IVORY DARK 6 KILOS.."). The light blue light seems to indicate the DeltaET (RoR of ET) of that profile as it corresponds to the shakes of the ET of this background profile. You can decide not to show this DeltaET curve by unticking the DeltaET flag in the "Profile Background" dialog (menu Roast >> Background).
M
Dear Marko, Dear Frans,
Once more, many thanks for your great technical support.
A) Notifications
As a matter of fact, the probes have not changed, but remain the same, K
type for ET and J type for BT.
Concerning the absolute values, after comparing the indications on room
temperature (30 Degrees of Celsius) between both instruments (AMPROBE TMD
56 and PHIDGET 1048), the following Artisan formula (ARTISAN V.1.1.0) was
set, in order to obtain a temperature offset correction on BT value:
Configuration/ Device/ Symb ET/BT:
Y1: None Setting (ET Value)
Y2: 1.11*Y2 (BT Value)
Also: Configuration/ Device/ Phidgets/ Phidgets 1048/1051
Type 1 2 3 4
J K K K
Then, real time tests took place with various coffee roasting profiles
(attached files) and the temperature measurement system worked properly and
accurately, because the above settings are kept in memory for all the
already saved coffee roasting profiles.
B) Questions
l During real time roasting , is there any way that events (TP, FC etc)
show up on the specific time moments on BT curve, without having to press
the respective events buttons?
l What is the meaning of the light blue curves that show up on the
background of the IVORY CITY PLUS 6 KIL coffee roasting profile? Is it a
kind of interference?
Looking forward to your reply.
Best regards,
Electra Dedoussi
MBA Automation Engineer
Phone: +30 23940 54 454
Mobile: +30 6984 0300 14
E-mail: *ededoussi(a)gmail.com* <#sent/_blank>
Skype ID: electra.dedoussi2
*www.novasystems.gr* <#sent/_blank>
Dear Electra,
did you only change the meter (Amprobe => Phidget) or also the probes? Note that thermocouple are not very accurate on an absolute scale (thus there are specific and more expensive thermocouple classes that are better than normal once). RTD probes like PT100 are more accurate if you are interested in absolute values.
In Artisan you can shift a profile loaded into the background up and down via the cursor keys or the Profile Background dialog (menu Roast >> Background). During recording you can apply any formula to a temperature signal by defining a symbolic formula.
See the following posts for some documentation of this feature:
https://artisan-roasterscope.blogspot.de/2015/10/signals-symbolic-assignmen…https://artisan-roasterscope.blogspot.de/2014/04/virtual-devices-and-symbol…
To shift your BT values (during recording) by 10C up, you can enter the following formula
x+10
under "BT Y(x)" (menu Config >> Device, tab 3 "Symb ET/BT").
Note that you can enter all type of non-linear mapping as symbolic formula here too.
Marko
> On 17. Sep 2017, at 20:40, electra dedoussi <ededoussi(a)gmail.com> wrote:
>
> Dear Marko,
>
> According to our last time communication (mail on 19/07/17) about the coffee roasting machine application, the AMPROBE TMD 56 has been replaced with a PHIDGET 1048 and communication has now been established without any errors at all.
>
> The next step was to compare the temperature indication values, ET and BT, between AMPROBE TMD 56 and PHIDGET 1048, with the following result.
>
> Although the indication of the ET shows the same on both instruments, we experience an 11% less temperature indication comparing AMPROBE TMD 56 to PHIDGET 1048 (PHIDGET 1048 indicates less temperature).
>
> Any idea why this happens? And is it possible to apply a universal correction (temperature offset) on the PHIDGET 1048 readings so we do not lose all of our roasting profiles?
>
>
> Looking forward to your reply.
>
> Best regards,
>
> Electra Dedoussi
>
> MBA Automation Engineer
>
> Phone: +30 23940 54 454
>
> Mobile: +30 6984 0300 14
>
> E-mail: ededoussi(a)gmail.com
>
> Skype ID: electra.dedoussi2
>
> www.novasystems.gr
>
>
>
Hi Electra,
You did not attach screen snapshots of the different profiles so I cannot see what you mean by “11% less temperature”
Do you mean you now read 89ºC where you would read 100ºC before?
You can have an offset, but ion the temp is correct at room temp, then the difference may not be linear and it maybe best to keep it as it is.
If that is the case: that is not a “lost profile”, it is no problem at all if the roaster understands what coffee roasting is.
If the toastmaster / operator of your machine does not understand coffee roasting than that is the first thing to learn.
If you change probe / probe position / interface then indeed the temperature may be observed differently but the process remains essentially the same.
So maybe explain and illustrate what you think the problem is.
Frans
> Op 17 sep. 2017, om 20:40 heeft electra dedoussi <ededoussi(a)gmail.com> het volgende geschreven:
>
> Dear Marko,
>
> According to our last time communication (mail on 19/07/17) about the coffee roasting machine application, the AMPROBE TMD 56 has been replaced with a PHIDGET 1048 and communication has now been established without any errors at all.
>
> The next step was to compare the temperature indication values, ET and BT, between AMPROBE TMD 56 and PHIDGET 1048, with the following result.
>
> Although the indication of the ET shows the same on both instruments, we experience an 11% less temperature indication comparing AMPROBE TMD 56 to PHIDGET 1048 (PHIDGET 1048 indicates less temperature).
>
> Any idea why this happens? And is it possible to apply a universal correction (temperature offset) on the PHIDGET 1048 readings so we do not lose all of our roasting profiles?
>
>
> Looking forward to your reply.
>
> Best regards,
>
> Electra Dedoussi
>
> MBA Automation Engineer
>
> Phone: +30 23940 54 454
>
> Mobile: +30 6984 0300 14
>
> E-mail: ededoussi(a)gmail.com <mailto:ededoussi@gmail.com>
> Skype ID: electra.dedoussi2
>
> www.novasystems.gr <http://www.novasystems.gr/>
>
>
Dear Marko,
According to our last time communication (mail on 19/07/17) about the
coffee roasting machine application, the AMPROBE TMD 56 has been replaced
with a PHIDGET 1048 and communication has now been established without
any errors at all.
The next step was to compare the temperature indication values, ET and BT,
between AMPROBE TMD 56 and PHIDGET 1048, with the following result.
Although the indication of the ET shows the same on both instruments, we
experience an 11% less temperature indication comparing AMPROBE TMD 56 to
PHIDGET 1048 (PHIDGET 1048 indicates less temperature).
Any idea why this happens? And is it possible to apply a universal
correction (temperature offset) on the PHIDGET 1048 readings so we do not
lose all of our roasting profiles?
Looking forward to your reply.
Best regards,
Electra Dedoussi
MBA Automation Engineer
Phone: +30 23940 54 454
Mobile: +30 6984 0300 14
E-mail: ededoussi(a)gmail.com
Skype ID: electra.dedoussi2
www.novasystems.gr
