Has anyone done SMS messaging from an Omron CJ2J-CPU31 PLC? If so could you help please. Omron here in Oz have not had any experience doing this and are unable to assist.
Hey Bob,
You have a couple of options, depending on if the device has internet access. If you ave internet access you could sign up for an email - sms service and have the plc email the alarms. Alternatively using a GSM modem connected via serial, and using "AT" commands to send the SMS.
If your after a GSM modem try ESIS they'll have something suitable.
They might have an FB, but what about the hardware required?
Sending serial strings is very easy, but the bulk of it comes down to the message generator (modem/cell phone/text2email)