Javier Galaz

OMG!!! IT'S ALIVE!!! Thank you so much to all of you guys. In order to register what worked: Visilogic version:9.8.65 OS version: 4.008 (10) Use the Modbus configuration from example "C:\Program Files (x86)\Unitronics\Unitronics VisiLogic_C\Examples\Version 900\Project examples\Communications\Ethernet\V700_Modbu_TCP slave.vlp". I believe the culprit was OS version, I'm going to try with Visilogic 9.8.91 and 4.008 (10) OS Version, and come back here to tell you my results. Again thanks to all of you, you are great!

Yes I did that, thought that maybe there could be a repository with the older OS.

Yes, but I wanted older versions, in my computer I could only find 4.10, but, no problem I installed all the versions on my windows virtual machine and copied the different OS's, for now I'm still trying to downgrade my program to .65 When that's done I'm going to try everything we've discussed.

Hola @Fernando Castro , I'm trying to downgrade the OS, do you know where I can get the corresponding .uos file?

Thats right, I've just checked with my Vision 130, and it works just like yours. Maybe the problem is with the touch HMIs?

Don't know, when I tried to go to info mode from visilogic using the "Online Test" it simply says, "No can't do" xD today's the big day, let's see what happens.

Thanks, really appreciate it. I've perused this program and see no relevant difference to my software. Now seeing this and with everything Flex has said, I'm definitely gonna try downgrading to 9.8.65 and see If that is the issue. Although his is gonna have to wait until monday when I have physical access to the PLC, to also check info mode and try to downgrade my software. Until then, THANKS VERY MUCH guys, you've been so helpful and nice It has been a really lovely experience for being my first time here. Best Regards to all of you.

On site I have a notebook directly connected to the PLC using standard micro USB cable. On that notebook I have Visilogic running and doing the tests we've been talking about. To that notebook I connect from my home computer using Anydesk (a remote desktop software).

Do you have a working program that I can test?

I supposed that is relevant only when using as Modbus Master, but I'm trying to set it up as Slave. Anyway I've tried setting the address as per the example, and still no luck.

Yes I've tried. In the V130 working software if I put 255 in the address and don't use it in my client I get empty response, but if I put something (not just 255) I get the correct answer. with V700 I've tried this variations too.

There is some data on those registers This is the connection config using Modbus poll (I believe that is what you mean by canned Modbus master): This is the read configuration P.S. : I'm gonna try the older more stable version.

No, I haven't, I'm remoting this unit through a field computer connected through usb. And info mode is not supported in online mode. On monday I can get to it.

It doesn't work, I can't even connect to port 502. Without that FB I can establish a connection to 20258, even if only to get empty responses.

I've done that, I get a 1 with request #28, and according to the help page that corresponds to modbus mode.

I've actually made some changes with the help I've gotten in this thread. Here's an update. ENAMI HMI 2 Solo Modbus.vlp

I have the same VisiLogic version, the Help version is V300-21-G23 Rev: 3.00. The operand descriptor decscription is also blank, but the number increases when I send a request.

I've read that, thank you for pointing that out, however, pymodbus uses addresses starting with 0, just like Unitronics Modbus. Anyway if I was reading coil number 1 using address 0001 it should still give me register number 2 and not empty response. I've tried using Modbus poll and CAS Modbus scanner (I saw in that thread that someone used them to some degree of success), and they both gave me timeout. using the same page in Help you suggested, namely "Vision700 - Using Ethernet", I found that It receives packages and is supposed to be sending them too. both numbers update every time I send a modbus request, but my client receives nothing.

In the help, the page that Kratmel pointed out: "Vision700 - Using Ethernet". At the bottom to be more precise.

So, if I understand correctly, if I use this: like this I would get Modbus port in port 502 instead of 20258 which is the default?

Thanks for your reply, I've read that and found more info, however I still receive 0 bytes responses. I've read that the V700 socket 2 port is actually 20258 and not 502. So I've changed my modbus client accordingly. My SDW 61 register is actually incrementing every time I try to read coils (1), read input registers (3), or read holding registers (4), but I still get 0 bytes in response. If relevant, I'm trying to read using a python library called pymodbus, https://pymodbus.readthedocs.io/en/latest/readme.html

Hi, I've just joined this forum because I have a problem and I can't find the solution. I've a V700 HMI with a V200-18-E2B Snap-in I/O module. I need to use this HMI as a TCP/IP slave using port 502. I have a ladder that works on V130, but it doesn't work on this V700. could you please help me? ENAMI HMI 2 Solo Modbus.vlp is the trimmed down version of the program, because I wanted to remove every other variable in order to try to debug my program, I believe this should let me read and write every available modbus address (coils, input registers, etc), but when I try to read coils I get 0 bytes read.