Hi Jukka, Your best bet is probably to take a look at adding support for smaller message sizes. The ‘large’ part of the large forward open refers to the message size (I think for large connections it is around 1500?) a normal forward open is around 500? Bytes or so.
Ben On Thu, 5 Jan 2023 at 5:42 pm, Jukka Sirviö <jukka.sir...@mipro.fi> wrote: > Hello, > I'm using eip_update branch, > the plc does provide ethernet/ip, but I'm not able to set up the > connection correctly. > > plc indicates that it does have support for ConnectionManager, but when > sending Open Connection Manager EIP Package, the tcpdump indicates that > large forward open is not supported. Any ideas what are my alternatives > here? Some of the supported attributes (cip object model) for the plc are 1 > (Identity), 2 (MessageRouter), 4 (Assembly), 6 (Connection manager), 244 > (Port), 245 (TCP/IP), 246 (Eth Link).. total of 21 attributes. > > 145 46.246813 originator → target CIP CM 146 Connection Manager - Large > Forward Open (Message Router) > 146 46.249130 target → originator CIP CM 98 Service not supported: > Connection Manager - Large Forward Open > > > thanks for help: > -Jukka > > ________________________________ > > Tämä sähköpostiviesti (liitteineen) saattaa sisältää luottamuksellista > tietoa, joka on tarkoitettu > vain vastaanottajalleen. Jos et ole oikea vastaanottaja, ilmoita viestin > lähettäjälle tapahtuneesta > virheestä ja tuhoa viesti välittömästi. Viestin luvaton julkaiseminen, > kopioiminen, jakelu tai muu > käyttö tai toimenpiteisiin ryhtyminen sen perusteella on ehdottomasti > kielletty. > > This message (including any attachments) may contain confidential > information intended for > the person or entity to which it is addressed. If you are not the intended > recipient, notify the > sender and delete this message immediately. Notice that disclosing, > copying, distributing or any > other use of the message and its information, or taking any action based > on it, is strictly prohibited. > > ________________________________ >
