Hello,

I have Delta DOP110 IS hmi and i have a modbus tcp device.

I want to communicate hmi and device with modbus tcp/ip but i didn't understand device's register address. I have never seen like this type addressing.

For example, output bytes 2,3 fault code, What is the register address?

 

Hello,

I have Delta DOP110 IS hmi and i have a modbus tcp device.

I want to communicate hmi and device with modbus tcp/ip but i didn't understand device's register address. I have never seen like this type addressing.

For example, output bytes 2,3 fault code, What is the register address?

Modbus is 16 bit what you have there is 32 bit, you have to combine 2 ond 3 in the plc to read it, I think that is your problem

 

Maybe this can help you to understand it

"bit manipulation - PHP: Combine Two 16-bit Integers into a 32-bit integer - Stack Overflow" https://stackoverflow.com/questions/3066013/php-combine-two-16-bit-integers-into-a-32-bit-integer

 

Maybe this can help you to understand it

"bit manipulation - PHP: Combine Two 16-bit Integers into a 32-bit integer - Stack Overflow" https://stackoverflow.com/questions/3066013/php-combine-two-16-bit-integers-into-a-32-bit-integer

According to the document byte x: high byte, byte x+1: low byte. A byte is 8 bit so combined byte x and byte x+1 are unsigned decimal 16 bit data.

 

I think the source of the confusions is because you are looking at documentation for the wrong protocol.

The image you show seems to be from the product's PROFIBUS documentation:
https://lamtec.su/download/Etamatic/BUS/BA-Profibus-DLT6100-EN.pdf

Try the Modbus documentation here:
https://lamtec.su/download/Etamatic/BUS/FB-Modbus-DLT6099-EN.pdf

 

I think the source of the confusions is because you are looking at documentation for the wrong protocol.

The image you show seems to be from the product's PROFIBUS documentation:
https://lamtec.su/download/Etamatic/BUS/BA-Profibus-DLT6100-EN.pdf

Try the Modbus documentation here:
https://lamtec.su/download/Etamatic/BUS/FB-Modbus-DLT6099-EN.pdf

Maybe you are right. In Lamtec website this document is modbus tcp document. I cant attech the document because of its size

 

Hi..
I have a problem with the Delta HMI W series.
I have a 12se series PLC and a W127B HMI.
I connected this PLC to HMI with TCP IP communication but I have about 5-6 second delay to update the value in HMI.

 

To improve your chances of getting responses, I recommend that you start a new thread for this issue and provide as much details as you can, including which device is the client (master), which is the server (slave), and how you have the client (master) configured for Modbus communications (screenshots are helpful).