CODESYS - the IEC 61131-3 automation software

Welcome to the official CODESYS Forum by 3S-Smart Software Solutions GmbH | A member of the CODESYS Group
Deutsche Version English version russian version 
It is currently Mon Sep 16, 2019 5:28 pm

All times are UTC+01:00




Post new topic  Reply to topic  [ 1 post ] 
Author Message
PostPosted: Wed Mar 11, 2015 6:56 pm 
Offline

Joined: Fri Mar 06, 2015 1:34 pm
Posts: 3
Hello to everyone!
I'm using a Raspberry Pi B+ as a Modbus master device running Codesys runtime, the RS485 is provided by a Raspicomm over the Pi.
Everything works fine in a configuration with the parity control (8E1) but if i use a configuration without parity control the master does not recognize the response from the slave and give a timeout error.

Image

Sniffing the comunication between two devices with an RS485 to USB adapter on PC, the message sent from the master and the response from the slave seems to be correct:

Image

Could anyone help me?
Thanks in advance
Alberto


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 1 post ] 

All times are UTC+01:00


Who is online

Users browsing this forum: No registered users and 5 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Limited