The disable Tags in Error feature of the eWON allows to debug polling problems between the eWON and the PLC.
For optimisation purpose and since firmware version 5.2, the eWON can detect if tags are valid or not, and disables the polling of invalid tags.
By default, this feature is not activated.
To activate the disable Tags in Error open the IOServer global configuration page.
At the creation of the Tags or at the initialisation of an IOServer, all tags are considered as valid and are polled.
If repetitive errors occur on some Tags, these tags will be considered as invalid and will not be polled anymore !
A specific error message will be written in the event log.
This message is "Protocol Error while reading Tag (IOserver - TagName - Polling disabled for this tag)" (see example in figure below)
Invalid tags will be polled again when:
• the IOServer is started (i.e.: after a IOServer modification)
• a manual INIT of the IOServer is operated using the "Init" link next to the IOServer selection box
• a modification of the Tag (in the I/O Server Setup part of Tag Setup)
