My EtherNet/IP adapter stops communicating when scanned by M241/M251
M241/251 opens 1 connection to check adapter identity and a second one for implicit exchanges.
The first connection is closed after 40 seconds as identity does not need to be checked continuously.
On some adapters (like ATV71 EtherNet/IP card VW3A3316), this first connection closure causes communication interruption of the second connection, too.
A workaround is to keep the first connection open by sending GetAttributeSingle requests for example every 5 seconds.
This can be done using function block EipDataExch from the EtherNet/IP Scanner library.
i_xMsgType input should be TRUE to use connected mode.
The first connection is closed after 40 seconds as identity does not need to be checked continuously.
On some adapters (like ATV71 EtherNet/IP card VW3A3316), this first connection closure causes communication interruption of the second connection, too.
A workaround is to keep the first connection open by sending GetAttributeSingle requests for example every 5 seconds.
This can be done using function block EipDataExch from the EtherNet/IP Scanner library.
i_xMsgType input should be TRUE to use connected mode.
Publié pour: Schneider Electric Belgium
Besoin d'aide ?
Sélectionnez le bon produit
Trouvez rapidement et facilement les produits et accessoires adaptés à vos applications.
Obtenir un devis
Effectuez une demande de renseignements en ligne et un expert vous contactera.
Où acheter ?
Trouvez facilement le distributeur Schneider Electric local le plus proche.
Centre d'aide
Trouvez des ressources de support pour tous vos besoins, en un seul endroit.