Sebbe

I just got word from Beckhoff support that its possible to create multiple AdsClients which each can have about 600 notifications. Just to help anyone else running into this issue

Is there a max number of ADS notifications that i can register in my C#-application? When i pass 600 notification it doesn't pass the changes to the HMI anymore. If there is a limit, can I change it? Regards

Hi, I've created a structure in a CJ2 containing several substructs. Some of these structures contains BOOLs. The PLC address these as: bool1 E4_0.00 bool2 E4_0.01 bool3 E4_0.02 bool4 E4_0.03 As long as they in a serie. Now when i import the structure into Sysmac Gateway and try to set the bools in the PLC from there it thinks each bool is a word. In Sysmac Gateway: bool1 E4_0.00 bool2 E4_1.00 bool3 E4_2.00 bool4 E4_3.00 What are the possible workarounds? Thanks.

Hi! Im trying to control a E5AK-AA2-500 Temperature Controller from a HMI alternatively from the PLC directly though RS-485. I've found smart active parts in the HMI for similar controllers but not exactly E5AK, anyone know if these can be used directly instead? Regards Sebbe

I tried to sniff the traffic using a hub today and I see what you mean with complexity. As im interested in learning more about EtherNet/IP and not under any particular timelimit im going to give it a try and see how far i can get. Thanks! /Sebbe

Its for a school project. Initially i just want a PLC to send an array to a PC that will store it in a database. Later i will try to produce some information in the computer and see if i can get the PLC to consume it. I am using an unmanaged switch and that would explain why i dont see all the packets being sent. I will get a hub to test with tomorrow. Thanks for the help!

Hi! Im trying to understand how two PLCs create a connection between eachother to be able to mimic it using my own code. Ive attached a screenshot from Wireshark on what information being sent between the two plcs. First i only have the PLC1 with IP: 192.168.250.2 connected. Its looking for the PLC2 with IP: 192.168.250.3 and continue to send ARPs until i connect PLC2. Between no. 5 and 6 (see attachment) i connected PLC2 and in some magical way PLC1 recognize that it have been connected and initiate the multicastgroup after which PLC2 start sending data. Is there some information i cant capture with Wireshark or how do they communicate their presence to eachother without using packets (some layer 1 thingy?)? Thanks in advance!