Matrix user forums

Hi Ben, I have taken some steps to try and pin this issue down further. 1. I have modified my program to accept an binary and analog value from the master, then set those to be read back again in order to test the ability to write values master>slave. Up until now I have only tried to read values. I...

HI,
Sorry, i just realised. I did it the other way around and requested adress 1 instead of 0 and now the console reports the correct value, but the master still reports a random number (26060) instead of 255

Hi,

I have just found the component debug console, and this is what it is showing me. I am not sure what this means?

Hi Ben, I will give a flowcode to flowcode link a try and see what that gives. I have tried loading both analog and binary with different values, and they never resemble what I read. The exception is binary, which has a 50% chance of being right! I say this as if I make repeated coil read requests, ...

Good Morning Ben, Have you had a chance to look at this? Are you able to tell me what client you use for testing? As it does not appear to work in simulation, and you cannot find an issue with my program, which essentially follows the example, can i assume this is a bug? Sorry if this is not the cor...

Yep, this was the same in 7, not sure why?

Hi, To give some more information on this issue, I get exactly the same results in simulation, which i have to admit i did not try before :roll: Capture1.PNG Capture2.PNG As you can see, both values should be "1". I am not sure where 27887 comes from? What software are you using to test this, maybe ...

Hi Ben, I use Abacom profilab, which connects fine but returns random numbers, not the values written to the registers. https://www.electronic-software-shop.com/lng/en/electronic-software/profilab-expert-40.html?language=en The same software works fine using modbus serial. I have the same problem us...

Good Morning Ben,

Did you get a chance to take a look at this? Am i doing something wong or is there a bug?

Best Regards

James

Hi,

Thanks, please see attached.

Best regards,

James.

Hi,

I have also been trying to get this working, was the issue resolved?

Best Regards,

James

Hi, I have ported this project over to the raspberry pi, as this has supported tcp/ip coms and should remove this "unknown" from the problem. I now longer have to re initialise the modbus coms every loop, which is good! However i still have a problem that the values written to the modbus registers i...

Hi Benj Thank you very much for getting back to me. I am using an arduino Ethernet shield (WizNet W5100). I appreciate that this isn’t the right module for the macro, but other people on the forums seem to using it successfully. The communication seems ok as the IP address etc is being set ok, I can...

Hi, Playing with this some more, it seems that that this macro is broken? Looking at other forum posts, its appears necessary to have the “network Coms” component between the TCP/IP component and the Modbus TCP component. Can anybody confirm this is the case? This program will not compile without it...

Hi, I am in the progress of adapting a program from Modbus RTU to Modbus TCP and have come across what seems to be a bug in the ModbusTCP slave Macro. In your examples, and in my previous modbus RTU program, the initialise macro is called once, then the check for incoming macro on a loop. When used ...