HL7618RD not registering to network

Hello all, I’m starting some work with the HL7618RD module, and I have some problems setting it. The idea is that i configure it after power on of my system. Then, when it is time to upload a file (usually once per hour), i:

  1. turn it on
  2. wait it to initialize
  3. upload the file
  4. turn it off

Then i repeat it the next hour. If this fails one time, i run the configuration again (still have to improve this).

This apparently works well until i update the modem’s fw from 1.6 to 1.10. After the modem is updated, it uploads a number of times (i didn’t observe a pattern, sometimes 5 hours, sometimes 1, and so on) and then it stops. When i spy my system i see that the modem is not registering to the network anymore, returning +CGREG: 4.

Does anyone have any idea what i might be doing wrong?

Thanks for the support

This is the configuration of the modem i´m doing:

ATZ
OK
AT+KSLEEP=2
OK
AT&D0
OK
AT&K3
OK
AT+CPMS=“ME”,“ME”,"ME"
+CPMS: 0,32,0,32,0,32

OK
AT+CMGF=1
OK
AT+CMEE=1
OK
AT+KSREP=1
OK
AT+KAAT=1
+CME ERROR: 100
AT+WMANTSEL?
+WMANTSEL: 0

OK
AT+WMANTSEL=1
OK
AT+CGREG=1
OK
AT+CNMI=0,1,0,0,0
OK
AT+COPS=3,2
OK
AT+COPS?
+COPS: 0,2,“311480”,7

OK
AT+WDSI=1023
OK
AT&W
OK
AT+CFUN=1,1
OK
> Waiting for complete initialization of the modem (+PBREADY)

+CGREG: 1

+PBREADY
> Waiting for complete initialization of the modem (KSUP: 0)

+SIM: 1

+KSUP: 0

Hi lucasRotava,
Could you show me your full log when +CGREG: 4 occurs?

Sure, i´ll update my system and as soon i get the issue i´ll post it.

I forgot to mention, but at the time i revert it back to the previous firmware, the modem is able to register again, that’s why I have to update it again.

Here is the log, as we can see after i downgrade the fw, the station immediately registers. Could it be that the update process is failing somewhere?

Turning modem on

+WDSI: 0

+PBREADY
>
>> Reading modem’s info
>
AT+KGSN=3
+KGSN: PZ823341430910

OK
AT+KGSN=0
+KGSN: 359998071137642

OK
AT+CGMM
HL7618RD

OK
AT+CGMI
Sierra Wireless

OK
ATI3
RHL7618RD.V.1.10.151600.201802201619.x7120m_1

OK

Manufacturer of modem: Sierra Wireless
Type of modem: HL7618RD
Modem firmware version: RHL7618RD.V.1.10.151600.201802201619.x7120m_1
IMEI: 359998071137642
Serial number: PZ823341430910

Reading SIM’s info

ATE1
OK
ATE1
OK
ATE1
OK
AT+CPIN?
+CPIN: READY

OK
AT+CIMI
311480998800732

OK
AT+CCID
+CCID: 89148000004279045051

OK
AT+CPIN?
+CPIN: READY

OK
AT+CNUM
+CNUM: “Line 1”,"+15597531530",145

OK
SIM’s MCC: 311
SIM’s MNC: 480
SIM’s CCID: 89148000004279045051
SIM’s CIMI: 311480998800732
SIM’s PIN: READY

Basic configuration of the modem

Waiting for complete initialization of the modem (KSUP: 0)
ATE1
OK
ATE1
OK
ATE1
OK
AT+CPIN?
+CPIN: READY

OK

VZW OMADM server to configure PDP context**

ATE1
OK
ATE1
OK
ATE1
OK
ATZ
OK
AT+KSLEEP=2
OK
AT&D0
OK
AT&K3
OK
AT+CPMS=“ME”,“ME”,"ME"
+CPMS: 22,32,22,32,22,32

OK
AT+CMGF=1
OK
AT+CMEE=1
OK
AT+KSREP=1
OK
AT+KAAT=1
+CME ERROR: 100
AT+WMANTSEL?
+WMANTSEL: 1

OK
AT+CGREG=1
OK
AT+CNMI=0,1,0,0,0
OK
AT+COPS=3,2
OK
AT+COPS?
+COPS: 0

OK
AT+WDSI=1023
OK
AT&W
OK
AT+CFUN=1,1
OK

Waiting for complete initialization of the modem (+PBREADY)

+CGREG: 0

+WDSI: 0

+PBREADY

Waiting for complete initialization of the modem (KSUP: 0)

+SIM: 1

+KSUP: 0

Starting bearer and testing APN

Waiting for registration in the network (+CGREG: 1 or +CGREG: 5)

Not registered in the network

Error starting the bearer, trying to restart it

Please, ignore the errors here

AT+KCNXDOWN=3,1
OK

******* Here is when I entered in bridge mode and i send the commands by hand:

+SIM: 1

+KSUP: 0
at+cgreg?
+CGREG: 1,4

OK
at+cgreg?
+CGREG: 1,4

OK
at+cgreg?
+CGREG: 1,4

OK
at+wdsf=1
OK

+WDSI: 14

+CGREG: 0

+WDSI: 0

+CGREG: 1

+PBREADY

+SIM: 1

+KSUP: 0

+WDSI: 17,1

+NVBU_IND: 0,0,“2019/04/10 07:34:31”,"BHL7618RD.V.1.6.151600.201704201024.x7120m_1"

+NVBU_IND: 0,1,“2019/04/10 07:34:31”,"BHL7618RD.V.1.6.151600.201704201024.x7120m_1"

+NVBU_IND: 0,2,“2019/04/10 07:34:31”,"BHL7618RD.V.1.6.151600.201704201024.x7120m_1"

+WDSI: 4

+WDSI: 6

+WDSI: 8

Hi lucasRotava,

From your log, I see after you downgrade the package successfully (+WDSI: 17,1) modem get registered.
Could you try to upgrade by FW.exe to see if issue can be solved?
And try to select the network manually as below:
AT+COPS=?
AT+COPS=1,2,“46001”,2 //2 UMTS

From my other thread, about the WMANTSEL command, i found out that apparently the command AT+WMANTSEL=1 is related to my registration problem. As a test, i left my system without the AT+WMANTSEL=1 command in the initialization of the modem, and until now it is registering and communicating with no problems. I want to try and reproduce this repeatedely now.

Sorry, i cannot work with the FW.exe, this is a remote system (that’s why i am kind of slow to run the tests).

How about the antenna connection and the signal quality there(AT+CESQ)?
I don’t think +WMANTSEL=0/1 will result the registration issue.
AT+WMANTSEL=0 //Use main and diversity antenna on LTE
AT+WMANTSEL=1 //Only use main antenna on LTE

I suggest you set
AT+XCSQ=1 (Enable URC of radio signal strength and quality indication)
AT+XCSQ=0 (Disable)
AT+CEREG=2(Enable URC of EPS Network Registration Status).

After +CGREG: 1,4, could you check the following result?
AT+CESQ
AT+CEER
AT+COPS=?
AT+COPS=1,2,“46001”,7 //LTE, select your own plmn manually

Turned on the modem and ran the commands you asked:

+SIM: 1

+KSUP: 0
at
OK
at+wmantsel?
+WMANTSEL: 1

OK
ati3
RHL7618RD.V.1.10.151600.201802201619.x7120m_1

OK
at+cgreg?
+CGREG: 1,4

OK
AT+CESQ
+CESQ: 99,99,255,255,255,255

OK
AT+CEER
+CEER: "No report available"

OK
AT+COPS=?

At this point the modem hangs
Then i power cycled it to restart

+SIM: 1

+KSUP: 0
at+cfun=4
+CGREG: 0

Modem hangs again
I restart it again, and now i will send AT+WMANTSEL=0 (and after a reset, AT+CFUN=1,1, it will register) and then send all the commands you asked me again:

+SIM: 1

+KSUP: 0
at+cgreg?
+CGREG: 1,4

OK
at+wmantsel?
+WMANTSEL: 1

OK
at+wmantsel=0
OK
at&w
OK
at+cfun=1,1
OK

+CGREG: 0

+WDSI: 0

+CGREG: 1

+CEREG: 1,"2300","008A4C01",7

+PBREADY

+SIM: 1

+KSUP: 0
ati
HL7618RD

OK
ati3
RHL7618RD.V.1.10.151600.201802201619.x7120m_1

OK
AT+CESQ
+CESQ: 99,99,255,255,11,18

OK
at+csq
+CSQ: 9,5

OK
AT+CEER
+CEER: "No report available"

OK
AT+COPS=?
+COPS: (2,"Verizon","Verizon","311480",7,0)

OK

Just put it back to AT+WMANTSEL=1, and reset it with AT+CFUN=1,1, to see what happens (it does not register and has +CGREG=1,4)

at+wmantsel=1
OK
at+csq
+CSQ: 9,5

OK
at&w
OK
at+cfun=1,1
OK

+WDSI: 0

+PBREADY

+SIM: 1

+KSUP: 0
at
OK
at+csq
+CSQ: 99,99

OK
at+cgreg?
+CGREG: 1,4

OK
at+cereg?
+CEREG: 2,0

OK
at+cireg?
+CIREG: 0,0

OK
at+creg?
+CREG: 2,0

OK
at+cops=0

Here the modem hangs again (5 minutes and nothing), and when i try to send anything to it i get the ABORTED message.

Sorry about the formatting of this post.
Now about the modem’s issue, is there something i’m doing wrong when configuring the modem? I repeated this process i put here and everytime the same happened, when AT+WMANTSEL=1 is saved, the modem does not register, when AT+WMANTSEL=0 is saved, then the modem connects. I have one system running with the AT+WMANTSEL=0 version, and it is running for 5 days already, and no sign of any problem.

Any ideas?

Systems still working (without using AT+WMANTSEL=1). Any new ideas on that?