iOptron CEM40EC Connection Error

Astrophotography has never been easier

Moderators: yang, Sam, lancer jiang, Ji.zwo

Post Reply
grahamw75a
Posts: 2
Joined: Sun Jan 12, 2020 9:38 pm

iOptron CEM40EC Connection Error

Post by grahamw75a » Mon Jan 13, 2020 8:37 pm

Hi,

Hope somebody can help. I have been trying to connect my ASIAIR to my new CEM40EC mount without success. I have been using ASIAIR with HEQ5 fine for a while now.

I have tried all suggestions in the forum including:

I) Making sure baud rage is 115200.
II) Seder firmware on SD to original image and then try connecting to mount.

Every time I get an error. Indeed To make sure system is wired correctly I pull the USB out of the ASIAIR and plug into my laptop and Commander works immediately.

The only thing I have noticed is that my mount is running firmware version 190422. Most of the comments here and on other sites seem to assume version 190220. Furthermore when I look on iOptron website it seems to suggest latest firmware is 190220. Could it be this that is causing the problem?

I would welcome suggestions.

Thanks

gundamrx91
Posts: 11
Joined: Fri Nov 08, 2019 10:54 am

Re: iOptron CEM40EC Connection Error

Post by gundamrx91 » Tue Jan 14, 2020 8:30 am

Hi,
how have you connected the Mount to the ASI Air?

Giuseppe

grahamw75a
Posts: 2
Joined: Sun Jan 12, 2020 9:38 pm

Re: iOptron CEM40EC Connection Error

Post by grahamw75a » Tue Jan 14, 2020 11:49 am

Hi Giuseppe,

I used a USB cable from one of the USB A ports on the ASIAIR to USB B port on the main body of the mount located next to the iPort.

Thanks
Graham

gundamrx91
Posts: 11
Joined: Fri Nov 08, 2019 10:54 am

Re: iOptron CEM40EC Connection Error

Post by gundamrx91 » Wed Jan 15, 2020 7:37 am

Hi Graham,

I'm using a GEM45 Mount, that is quite similar to the CEM40EC and I don't have any issue using the CEM40 driver on the ASI Air. Maybe you're right, the problem might be in the firmware Mount. You could try the older one in order to check if it works, but is pretty strange this behavior.

Giuseppe

User avatar
Ji.zwo
Posts: 267
Joined: Tue May 29, 2018 3:29 am

Re: iOptron CEM40EC Connection Error

Post by Ji.zwo » Fri Jan 17, 2020 8:34 am

grahamw75a wrote:
Mon Jan 13, 2020 8:37 pm
Hi,

Hope somebody can help. I have been trying to connect my ASIAIR to my new CEM40EC mount without success. I have been using ASIAIR with HEQ5 fine for a while now.

I have tried all suggestions in the forum including:

I) Making sure baud rage is 115200.
II) Seder firmware on SD to original image and then try connecting to mount.

Every time I get an error. Indeed To make sure system is wired correctly I pull the USB out of the ASIAIR and plug into my laptop and Commander works immediately.

The only thing I have noticed is that my mount is running firmware version 190422. Most of the comments here and on other sites seem to assume version 190220. Furthermore when I look on iOptron website it seems to suggest latest firmware is 190220. Could it be this that is causing the problem?

I would welcome suggestions.

Thanks
Hello Sir,
Yes, please try to update the Firmware to the latest, there is no issue with the CEM40 series and the GEM45 series, just tested and confirmed with the iOptron company.
ZWO | Tech Support
Location:lon=120.6 lat=31.3
SuZhou China

Post Reply