Very new to both arduino and c++. I have been searching both the web and forums and not really seeing my sitution, my world has been PLC w/ ladder and function block so trying to learn c++/structured text is new but im trying.
Sitution is i have a several strings of temperature sensors to read, 12 per string, multiple strings per location, several locations per site. The idea is put a GIGI R1 per string and use a router to set DHCP per GGI R1 then lock the tables. that way i dont have to program static ip's in the GIGI and i can write 1 program for all GIGI's that are on any site. all i need to do is grab the analog input and i am guessing put it in a modbus real address, i am going to leave it as raw data and not scale it. then the PLC would just poll each GIGI, this would only need to happen once a minute or two, not non stop.
I am unclear if i need to include any sort of modbus.h file, if so, which one, which leads to putting each analog point into a real, so does a modbus create the data registers and i just need to do like move analogread(1) to (30000) - this was just an example of what i envision. I have not orderered my GIGI yet, but i did order a smaller one with WIFI as a way to start testing when i get the code figured out, i want to keep the GIGI code as simple as possible with the idea that i could write 1 program for all of them and not have to keep a program for every single instance. its possible i could have 30 to 40 per site.
this is what i have so far:
// 2024.02.28 - Rev1-Analog pin, WIFI & ethernet
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#include <WiFi.h>
#include <WiFiClient.h>
#include <WiFiSSLClient.h>
#include <WiFiServer.h>
#include <WiFiUdp.h>
#include <Ethernet.h>
#include <ArduinoModbus.h>
void setup() {
analogRead(0);
analogRead(1);
analogRead(2);
analogRead(3); // put your setup code here, to run once:
analogRead(4);
analogRead(5);
analogRead(6);
analogRead(7);
analogRead(8);
analogRead(9);
analogRead(10);
analogRead(11);
}
void loop() {
// put your main code here, to run repeatedly:
int HoldigRegCnfg;
HoldigRegCnfg = modbusserver.configureHoldingRegisters(1,200);//Holding Registers 40001 to 40201
}
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Thanks in advance with helping me through this learning process.