Recent content by kannannatesh

I have concluded my one-week headache with your help, Now i got new hope/energy from your help, thanks a lot for your support and guidance

HI Jschulze Thanks a lot for your support, i was changed the meter which has a 32bit data output, now i can read all the values from the meter through RS485, once again thank you so much, friend.

Hi, i changed everything that you suggest in previous, but i am getting an error in double, the CRC value is correct that is shown in COm test pro. jpg, the output data is shown in Hercules.jpg, Hex data from Modbus is shown in Modscan.jpg my code is shown in below #include <SoftwareSerial.h>...

oh sorry, i will recheck the code and update on Monday then i will share the output, i will check the CRC value using the Modbus software, thanks for point out my mistakes

Hi I have print the values in my serial that is attached below with code it will help to understand the problem clearly #include <SoftwareSerial.h> #define Pin13LED 13 byte byteSend[10]; unsigned short reg_data[4]; long temp_int64; double final_value; unsigned int j = 0; byte request[] =...

I was done all the correction in my code and the output is given below for your reference, and if i change register address 74 instead of 75 i am getting nothing so i don't change register address, here i have two problems why the "j"(unsigned int) value does not increase to greater than 9...

oh sorry i forget to the device address, register address bytes, and length of the bytes, then also forget to write the j++ lines after the serial print function if i upload my above program to my Arduino definitely that will confusing me for some minutes so thanks for point out my mistakes, i...

i have shared the code what i am going to upload to arduino for your reference, if i miss any step what you are share with me kindly point that mistake #include <SoftwareSerial.h> #define Pin13LED 13 byte byteSend[10]; unsigned short reg_data[4]; long temp_int64; double final_value; int...

Sure, i will change the register value 116 instead of 117, then i will update the result to the forum after converting data, i am just using Arduino for check my meter can talk with my microcontroller or not, if i am complete the conversion with my Arduino, i will change the controller that's...

Thanks for the step by step clarification, then i don't use any library in my Arduino code i have attached my code for your reference, i will try above steps and i will let you know the result if you have knowledge on Arduino coding kindly help to understand one problem i have used the serial...

Thanks for the clarification, i already mentioned i am a newbie to RS485 so if you can kindly help to how can i convert the hex data to double, i was searched in google regarding this finally i found this link https://en.wikipedia.org/wiki/IEEE_754-1985#Single-precision_32-bit it shows an...

Hi jschulze i have attached my modscan32 software screenshot for your reference and i am reading the Holding register 117, the screenshot shows i choose double variable i get the exact meter value which is shown in the meter display, otherwise, if I choose float type the software shows 1.9362...

Hi jschulze, Thanks for the response, this is my complete data 010308FCF4D4823FF700013925 this data is received from my sensor, then i am a newbie to RS485 so can't understand the communication and other things, i was googled about data conversion i found this...

Hi Xiaojun, thanks for your reply, i have completed reading data from the Modbus meter with the help of MAX485, My problem is the meter returns 8byte double data, this is the return value in hex FCF4D4823FF70001 i don't know how to convert the hex data to double

Hi Jschulze Thanks for your reply, We bought a flow sensor from a local distributor and they are imported from China so they are don't have much technical documents and they share single page register address with the data type, I have attached the sheet for your reference, that sheet shows...