Dear Sir ,

I have a DT80 Data logger and an External serial modem. I want to send Alarm SMS Using the logger DT80 to the desired mobile
nos. Please advise the steps , i should follow .
Kindly note that i am using DEX to control DT80

Regards
Tapas

Assuming that you are using a GSM / GPRS... mobile modem, you have to look at the modem user manual to see if the modem can receive a specific command for the SMS sending. Some modems can also send SMS messages on an input contact closure. In the first case DT80 has to send the serial command on alarm triggering, in the second one DT80 has simply to close a contact (e.g. the internal relay) for SMS to be sent.

Dear Sir ,

I have done all the profile settings , mentioned in the Technical notes - "TN-0032".
I used the AT command line from the DEX's command window , which is as follows .
SS DIRECT 2
AT<ENTER>
OK
AT+CMGS="<MOBILE NO> < ENTER>
TEST SMS CTRL+Z <ENTER>
END SS DIRECT
I found my modem sending the sms "TEST SMS" to the mobile no , i mentioned .
But when i am using the command - [ DO'et-sms=0|This is the dataTaker talking |0412345678|60^M' ] as per "TN-0032"
system does not send any sms and throws Error msg " Command line error " .
pls advise

Regards
Tapas

Hi Tapas,
Are you using the Datataker SMSX GSM/GPRS modem or another "generic" GSM/GPRS modem?
Not 100% sure but the command 'ET-SMS=0... is a SMSX specific command.

dear Sir,

i am using generic modem.
pl help me with commands so that I can send alarm messages from dex events command. I have already used ET_SMS..... command, but it is not working.

thanks and regards,
tapas

Good morning Tapas,

You will need to look up the command set specific to your modem.
First you need to check if it does have the capability to send SMS messages and you need to know the exact commands. Then you can work out the dataTaker commands used to send the SMS to you modem.

Cheers
Roger

Dear Sir ,

It has a capability to send the SMS . I used computer's Hyper Terminal ( keeping the modem connected in the
computer's serial port ) to send the sms . I used the following command
AT+CMGS="<MOBILE NO> < ENTER>
TEST SMS CTRL+Z <ENTER>
And i found it can send the sms to the specified mobile no.
Now pls tell me how i can do the same through MY DT-80 , when an Alarm triggers .

Awaiting your reply .

Regards
Tapas

You can do it with DT80, but is not a trivial task and the implementation of a state machine to handle the timing / modem response is a time spending job. When years ago (no SMSX modem / DT8x Mobile version available) I faced the same problem I found that the GSM modem had the possibility to store fixed messages that can be sent using a single ASCII command string. This simplify the approach, give a look at the manual.

Dear Sir ,

It is really a grt news that My GSM modem can do the job . Pls note that
i am using DEX . I would request you to give me an example , If possible .
I studied the manual , but still i am not able to arrange the ASCII string commands
for sending the alarm messages to the different mobile nos.
If you can give me some examples , as you have experienced the same before .

awaiting your reply .

Regard
Tapas

Tapas,
That approach worked for my GSM modem http://www.smsco.it/tomcat/download/modem/Urmet_Industrial_en.pdf:

1- Storing the SMS message and phone # in the modem memory. This can be done using a terminal program and the AT+CMGW command.

2- Programming the logger alarm for the SMS sending. The text to be included in the "output text" field in dEx (select also the option "send to host port"): AT+CMSS^2 where 2 is the stored message number 2.

Hope this is ok also for your modem.
Good luck.

Dear Sir ,

I tried both commands CMGW and CMSS from HYPER terminal window and found that my modem responding well .
I can write and read message from the modems memory . Can sms the stored message as well .
But the moment i tried the same at DEX software , by inserting the command ( AT+CMSS^2) in the OUTPUT TEXT FIELD and selected
the SEND TO HOST PORT option it does not send any sms to the specified mobile no from the specific modem memory location ,
created by CMGW command before .

pls note accessed that memory location through Hyper terminal before .

Pls advise

Regards
Tapas

I used this approach for the old DT5xx series; try adding the <CR> <LF> at the AT+CMSS^2 command and also the ^ is a special command so the correct string should be: AT+CMSS^^2\013\010

Teo I know some time has passed on this topic but I could do with some advice at the moment and it relates to SMS issues which you have a good understanding of I note.

I have a DT80M and want to add an external modem to it [along with the internal modem], using either an Ethernet GSM or Serial Sensor Port GSM Modem. This might seem like an unusual requirement but it is a critical requirement for my remote communications strategy with the DT80M. I want to be able to send an SMS message to the DT80M via the external modem; then have that message string "looked up" or evaluated in the DT80M; and responded to accordingly by a returned SMS message actioned by either the external modem or the internal modem [either would be OK but maintaining the internal modem web server connectivity and continuity without interruption is important]. From a functionality example standpoint only, the SMS Message String sent TO the DT80M external modem would look something like: "SMS ME THE FOLLOWING VALUES 1CV;2CV;3CV" the DT80M Response SMS sent out would look something like this: "1CV=00001234.1234;2CV=00000018.9100;3CV=00000000.0027".

It seems that the discontinued SMSX GSM Modem went part way to providing this functionality although the documentation regarding SMS strings sent out relate to Alarm conditions rather than data Values. Being a serial modem though indicates that the DT80M Serial Sensor Port could be used for an external GSM Modem. Perhaps an Ethernet GSM Modem would even be a better option.

Is what I have described feasible and possible Teo, and any advice you can provide would be very much appreciated.

Lawrence