Dear Artisan user group;
I have received an error I have not seen before using a Mac with the latest solfware : Sierra with a 64 bit system.
We have installed the CP210 driver with our data logger using Omron controls.
Here is a screen shot:
Modbus Error: Read float() hex() argument can't be converted to hex@line 30521
Could it be we have the wrong driver installed?
We use to use the FT232 driver but data driver was upgraded to a new model that has worked with the CP210 driver on most models (this data logger is setup for future use with Bluetooth capabilities)
I'm relatively new to artisan. Been using RoastLogger for years but now that
I have my phidget 1048 I don't need the camera/ocr feature anymore.
I haven't been able to locate the help file or information about the
settings under Config-Device - Phidgets tab. For instance, Async check
boxes, raw data, change etc. I've found everything on the github page, but
maybe I just haven't been successful in pinpointing the proper area to look.
Secondly- I'm roasting on a Diedrich IR-24, which has a thicker J
thermocouple than the one I've hooked up to artisan, which is a K type 1/8in
I purchased here:
The temperatures are around 30 degrees F higher on the thinner K
thermocouple than what the roaster is reporting, even though my
thermocouples in the roaster are mounted next to each other (didn't want to
piggyback on BT of the roaster to phidgets)
Does anyone have any experience in this area? Perhaps the simple fact that
the probe is thinner means the readings will be different, but I do not
know. It would appear that the readings on the roaster are accurate while
the other is much hotter.
Just getting started, and appreciate any guidance.
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.
> 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.
> 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).
Dear Marko, Dear Frans,
Once more, many thanks for your great technical support.
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.
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.
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
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:
To shift your BT values (during recording) by 10C up, you can enter the following formula
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.
> 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