Crimson 3.0 Modbus registers to string.

Hello,

I have a sensor attached to the data station plus, which has several modbus registers i read from.

Forexample register 40038 is a 32 bit floating point measuring value and the next register 40040 has the parameter ID, parameter id 20 = RPM.

I am sending those values to a RAM6000 using Modbus TCP/IP and setting up my webplatform as a MQTT broker and sending my measurement values to the webplatform I am using.

The problem with this is that the measurement values I am sending has no context, so what I am trying to do is to get both the measurement value and the parameter ID into the same string so I can identify what parameter the measuring value has.

I have managed to make strings from arrays using the raw serial port using this program:
// declare local variable
int port = 2;
int i;
int j;


// clear the port's buffer
//ClearRx();

// print stop out of Port 2
PortPrint(port, "do sample\r\n"); //NB!! Return carriage and linefeed


int in = PortRead(2, 255);
// loop while there is data in the buffer, populating the array
while(in != -1) {
Zpulse.Array[i++] = in;
in = PortRead(2, 255);
Rs232.String();

// if something was received, build a string with byte 0-25
if(i > 0) {
Zpulse.Response = "";
for(j =0; j<=25;j ++){
Zpulse.Response += Zpulse.Array[j];
}
}
}

But I am strugling to get two Modbus registers into the same string, is this doable when the modbus registers have two different data types?

Your question gave me a headache, but I think I can point you the right direction. Download the Crimson reference manual at the bottom of the page here:


http://www.redlion.net/red-lion-software/crimson/crimson-31


Then look at IntToText() and DecToText() functions.

BryanG said:

Your question gave me a headache, but I think I can point you the right direction. Download the Crimson reference manual at the bottom of the page here:


http://www.redlion.net/red-lion-software/crimson/crimson-31


Then look at IntToText() and DecToText() functions.

Click to expand...

Il try to explain it better.
I have 2 Modbus registers i read, one for the measurement value and one for the parameter ID.

When i read these two registers they are stored in two separate Modbus registers.

Lets say i store the measurement value in register 1 and the parameter ID in register 2. The parameter ID for RPM is 22.
So when the motor is running at 1000 RPM it would look like this.
Register 1: 1000
Register 2: 22

What I would like to do is to put these two registers into one string so it would read 1000 22, or preferably into a ascii string so when i display the string it would say: 1000 rpm (49 48 48 48 9 114 112 109)

Hope this made it clearer.

Assuming that register1 is an integer then the output would be "1000rpm Whatever you want in the string\n"

Thank you! Worked like a charm.