[Connecting Unitronics V350 to Yaskawa MP 2600]

Dear Gabriel,

 

I understood what you meant, and yes I tried that example file but it does not work.. i dont know what to think.

[Connecting Unitronics V350 to Yaskawa MP 2600]

when I try to read a coil from my yaskawa.. this error occurs:

 

No Communication
The MODBUS session cannot be established.

 

What can this error depend on?

I set my yaskawa as Modbus slave.. 

[Connecting Unitronics V350 to Yaskawa MP 2600]

thank you Grabiel for your answer.

but my project still doesn't work. I was wondering why you didn't use the Connect Socket (2) block on your project?

The communication can not be established without that block... I guess so...

kind regards, Matteo

[Connecting Unitronics V350 to Yaskawa MP 2600]

When I try to read a coil at address '00001' ( according to the modbus memory) %IX24560.0 in the yaskawa modbus memory, I always get a wrong value.

I use the 502 and it should be the right port since I can read the value of some coils in yaskawa by using KEPserver.

I set yaskawa as modbus slave device, so I cant understand what I am getting wrong, I initialized the socket 3 in the V350 following the webinars found on your website.

At this point I dont know what to do, connecting two devices of the same type is really easy.. but connecting two devices from different competitors looks like a really complicated operation.

[Connecting Unitronics V350 to Yaskawa MP 2600]

Dear alexander,

 

Thank you for your help.

For ethernet communication yaskawa has the port number 44818.

The funny thing is I can not see that number in my slave devices list in the modbus configuration block.

Anyway tomorrow I will do as you just told me, hoping that it's going to work.

thank you again.

 

Matteo

[Connecting Unitronics V350 to Yaskawa MP 2600]

this is what I have done so far.

In the first TCP socket Init, I set the socket 2 and port 502( as default), and the second block I set the socket 0 and the port 20000 ( as default).

Int the second  modbus config, i set the Ip address of my yaskawa and the port 502 in the slave devices list.

In the first Modbus config I havent set anything since it should be the socket 2 for the slave.

In the connect socket 2 block , I set the remote port 502 and my yaskawa ip address.

in the connect socket 0 block, I set the remote port 20000 and the yaskawa ip address.

I still dont understand how these blocks work, there are too many degrees of freedom in this modbus configuration.

I read the help file, but it didnt help me at all.

 

[Connecting Unitronics V350 to Yaskawa MP 2600]

see below

[Connecting Unitronics V350 to Yaskawa MP 2600]

I am encountering several problems with my project.

I am trying to connect a V 350 to a Yaskawa mp 2600 by using modbus protocol through ethernet.

I was wondering what sockets must be initialized to establish a connection between these devices?

Must I use socket 2? or socket 2 and socket 0?

The master plc (v 350)  could send a string to the yaskawa which responds sending a bit back to the V350.

From the unitronics side I cant understand what address i should use to read a coil in yaskawa mp 2600.

According to the modbus memory model ( found on yaskawa help) if I want to read a coil ( 10001 modbus model ) which is %XB 24560.0 in yaskawa memory map, what slave address should I use to read this coil from Unitronics?

 

 

[Unitronics and Siemens MODBUS Communication]

I have to do something similar but using a Yaskawa mp 2600 instead.

Why did you connect 0-2 sockets?