pedro_pqc

Serie L and Modbus TCP

12 posts in this topic

Hi, We have to use a modbus tcp in orden to configurate several festo motor controllers via modbus tcp, We are going to use an L02P CPU because mitsubishi says modbus tcp protocol is implemented in its ethernet port. With FX3u we can use the function ADPRW, Is there any special function in serie L por modbus tpc? thanks in advance. pd: Any experience with MODBUS TCP with a GOT14?

Share this post


Link to post
Share on other sites
Last I knew L02CPU didn't have Modbus TCP built in. No Mitsubishi PLCs had it built in.

Share this post


Link to post
Share on other sites
Thank you Crossbow. I am afraid something is wrong here. I was talking with a mitsubishi technician who advice me to use this pcl. Before to enter to this forum, I was looking for information but really I did not find out nothing.I am going to to talk with him next monday. Thank you.

Share this post


Link to post
Share on other sites
They probably mean the pre-defined protocol function which is built in and has modbus. This is possible with L-series and Q series PLC's

Share this post


Link to post
Share on other sites
Unfortunately, the Mitsubishi technician is not available today . Meanwhile, it strikes me almost no information about using Modbus with the L series I only found this library (LQnUDEModbusTCP_GW2_V110.sul and LQnUDEModbusTCP_GW2_V110.gxw program ) on the site of Mitsubishi but no real applications .

Share this post


Link to post
Share on other sites
There are FB available but why not use the pre-defined protocol Edited by Gambit

Share this post


Link to post
Share on other sites
Gambit, thanks a lot for your recommendation!! However I was not able to see a general purpose protocol (including Modbus). I have attached a screen with the protocols that I can get with my GxWorks 2 Versión 1.98C. Is it a version problem? Should I to download a special library?

Share this post


Link to post
Share on other sites
I used pre-defined protocol for the built in ethernetcard. I think you choose for the ethernet or serial card. Anyway here you should find it under Schneider

Share this post


Link to post
Share on other sites
I've never seen built in protocols for Ethernet. That's a serial function last I was aware, and that means no Modbus TCP, because that's Ethernet.

Share this post


Link to post
Share on other sites
Crossbow Check my screengrab form my post Posted 02 June 2015 - 11:11 AM It's for build in ethernet so it must be modbus tcp/p

Share this post


Link to post
Share on other sites
Well I haven't touched one in several years, so maybe they added a function. Used to only be socket and MELSOFT.

Share this post


Link to post
Share on other sites
Hi, every one. I have updated my GxWorks and now I am able to see the modbus choise. I have had defined 2 protocols. The first one for the modbus 03 function and other one for the 16. Predefined protocols definitions are quite easy. Protocols are being executed with the instruction "sp.ecprtcl" However, these predefined protocols are not working properly for controlling slaves. Very frecuently the protocols start but not end. So, I have to reset. I suppose I have to review them deeply. Nevertheless, Thank you every body.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now