Hello.
Have a OPC DA Server (WinCC OA 3.14 P028).
How to transfer quality "BAD", when "Value" is out of range, described in "pv_range". We've got "GOOD" in OPC DA Client.
OPC Quality
- alug
- Posts:42
- Joined: Mon Oct 18, 2010 11:00 am
Re: OPC Quality
Hallo,
the OPC DA server does not indicate the BAD quality if the value is out of range.
There are currently two possibilities to indicate this to the client.
1) you configure a Default value for the range violation. Than you see a GOOD:LOCAL_OVERRIDE quality on the client is the range is violated.
2) you set the _original.._exp_invalid attribute depending on the range violation attribute (_original.._out_prange) in the application,
because the _exp_invalid attribute is indicated and BAD status to the client.
best regards
Andreas
the OPC DA server does not indicate the BAD quality if the value is out of range.
There are currently two possibilities to indicate this to the client.
1) you configure a Default value for the range violation. Than you see a GOOD:LOCAL_OVERRIDE quality on the client is the range is violated.
2) you set the _original.._exp_invalid attribute depending on the range violation attribute (_original.._out_prange) in the application,
because the _exp_invalid attribute is indicated and BAD status to the client.
best regards
Andreas