If you are using PmCommMsg for your communication then you can detect the error easily in the onEndOfTransfer event – it contains the error code.
For more details see:
http://www.promotic.eu/en/pmdoc/Objects ... ansfer.htmIf you are using PmCommData or PmCommClientData for your communication (both directly or via data extensions) then you can detect the communication status by checking the Quality of the Var (one item in the Data page).
For more details see:
http://www.promotic.eu/en/pmdoc/Objects ... uality.htmThis type of communication monitoring is used in the Simatic S7-1200 preconfiguration so you can see it there.