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emelianov / modbus-esp8266

Most complete Modbus library for Arduino. A library that allows your Arduino board to communicate via Modbus protocol, acting as a master, slave or both. Supports network transport (Modbus TCP) and Serial line/RS-485 (Modbus RTU). Supports Modbus TCP Security for ESP8266/ESP32.
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Arduino Uno & GPRS Shield Uno & Modbus #367

Closed C4ORT closed 3 days ago

C4ORT commented 1 month ago

Hello! I apologize that I am not strong enough in this topic, so I want to ask knowledgeable people. Can I use this library to connect my device (consisting of Arduino Uno, GPRS Shield Uno and a temperature sensor) to the OPS server? I found a lot of information about working via an Ethernet connection, but not via GPRS (Internet access via a SIM card) I was able to establish a connection to the server via TSP/IP and transfer data there via an HTTP request Can you help with an example? Or give something worth looking at Thanks!

PS: I used a translator, sorry if something is wrong

emelianov commented 3 weeks ago

Can you provide details on TCP library used for the GPRS Shield. Probably their functionality limited to http or some specific implementation is required (as the Modbus library has only Ethernet library support for generic Arduino).