Jump to content

WMOD2 GSM modem with V120

Recommended Posts

I am trying to get a V120 to send an SMS message using a Wavecom WMOD2 modem but the port is never properly initialised. The error code is 2 (reply error). I have verified that the modem itself is working by sending SMS messages using Hyperterminal.

One thing that might be an issue is that there is no built-in configuration for this modem, so I had to make my own which may not be correct. Does anyone have experience using this modem? If so, which commands did you use to initialise it?

Should the PLC-side modem configuration just be the same as the port initialisation?

Thanks in advance.

Link to comment
Share on other sites

  • MVP 2014

Is this quite an old modem? I googled it and found a datasheet. It looks like the predecessor to the Wavecom Fastrack family.

Have you tried any of the Wavecom profiles that Unitronics do support? I would start with the Fastrack M1206/1306 profile.

Another handy tool is the COM sniffer, see link below:


This will show you where the communication sequence fails.

If you keep hitting brick walls I would go looking for one of the modems that is on the supported list.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...