I am considering the RUT956 for an application and need to validate some requirements. I noticed that there are Modbus registers for sending SMS messages, but apparently it is not possible to read the contents of SMS messages via Modbus. The HTTP API is unfortunately not an option for me. With that in mind, I am wondering the following:
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Would it be possible to define a custom script to copy the contents of an SMS to a custom Modbus register?
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Would it be possible to, using the Modbus master interface, send an SMS message to a phone group that is already defined in the RUT956’s settings (that is, rather than specifying a specific phone number)?
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If so, would it also be possible to externally trigger modifications to this phone group configuration?
Ideally I’d manage the “phone book” recipients of equipment reports sent via SMS in the PLC. The user needs to be able to send some basic configuration commands (e.g. add/remove recipients) via SMS messages as well. I would need to do this without using the HTTP API. Any thoughts/ideas would be highly appreciated!