Technical data

W&T

3.11.8 OPC Alarms & Events

Various device types (described individually below) provide not

only variables for OPC Data Access, but can also provide events

for OPC Alarms & Events. Common to all of them are the

following events which refer to the network connection between

OPC server and the device:

Event Category Message Event Type Severity Event Source

1 no network connection to the device Simple Event 200 Network

2 network connection established 180

Remarks

· The same applies to the names of the Event Sources as to

the data items of the OPC-DA server: Listed in the table are

abbreviated names where the leading name component

„Device Name“ is always omitted.

· Message texts vary in the German and English version of

the OPC server and should therefore not be used as a filter

criterion.

· Whether the network connection to a particular device has a

fault can be determined by an A&E client only after it has