Technical support
A.2 Troubleshooting
LOGO! CIM
Operating Manual, 10/2021, A5E51250518-AA
89
If the all the items in cellular status are OK, but you still cannot send/receive SMS or access to
Internet, Check the following cases.
Problem
Possible cause
Possible remedy
CIM cannot
send/receive SMS
The SIM card account is in arrears.
Top up the account. Then go to the
Cellular status
page and press the button "Restart Cellular Module" to
register again.
The SIM card is locked by your telecom
provider.
Contact your provider to unlock it.
The SMSC (Short message service center)
number is not correct,
Ask your telecom provider for the SMSC number and
Enter it in the following page of web-based configura-
tion:
Cellular Settings
->
SMS Center Number
.
The cellular module doesn't support the
provider's SMS.
The message encoding format is not 7-bit
or UCS2 (16 bit).
The SIM card is not compatible with the
cellular module.
Change a SIM card which is compatible with the cellu-
lar module.
Cannot access to
Internet
The advanced settings (APN, dial-number)
is not correct.
Contact your telecom provide and enter the APN in
page: Cellular Settings -> Advanced Settings.
•
It is slow to open
the web-based
configuration
pages.
•
You get a load
fail when open-
ing the web-
based configura-
tion page.
•
You didn't install the certificate on your
operating system or browser.
•
There are too many cache files in the
browser.
•
Install the certificate on your operating system or
browser.
•
Clear the cache files of the browser.
