After AC450 Redimesion No Log Groups in TTD Configuration available
Few days ago we did a redimension on our AC450 Cotroller with LOTDB and LOTPT.
After starting up the system no TTD-logs were shown in TTD-config.
In the controller the TTDLOGx and TTDVARx are shown correctly.
Things we tried:
*Kill & start tasks
- DCTA200 TTD primary memory logging
- DCTA500 TTD manipulation
- DCTA600 TTD subscription
- DCTA100 TTD init
When we restore the same backup on our trainig-system without redimension. the trend-logs are working fine.
Changing any values in DIMDB occur this error.
The main problem is that we can´t restart the CPU for the next view months.
Is there any possibility to restore or to delete and create trend-logs during operation.
thanks hopefully ...
The TTD logs will fail to start if the total free memory in the controller is less than the total TTD log size. Given that you re-dimensioned, you probably no longer have enough free space. To confirm, repeat the "ACT DCTA100" command and check for error messages.
If you don't have enough memory there isnt really a lot that you can do. You're going to have to redimension again.
- If you allocated spare DB memory during the redimension, then you can get rid of this - its no use to you anyway after you allocate PC program space with LOTPT.
- You cannot reduce memory size using LOTDB and LOTPT, so you will have to go back to your original table dumps and redimension again.
- If you're using 800xA, reconfigure the History logs and collect data using OPC instead.
I think the total free memory in the controller can´t be the reason for that problem.
When we did the re-dimension we increased the system space from 8MB to 16MB.
After DIMDB the free system space is about 9000 kb
After DIMPC the free system space is about 7000 kb.
Spare Area in database is allocated. --> 100kb.
Im not sure about the correct meaning of Spare Area in DB.
What´s the adequate size of this area?
Could increasing spare area solve the problem?
The original table dumps are working fine at training-system.
But i have to increase the amount of some functional units and the size of PC pgm tables.
Only changing some functional units occurs the fault.
Object Reference Maintenance tool the concern dcTTDLogs where shown under resolved objects. After removing them we computed the database again, but we have the same state as before. So we cannot find the Log Groups for this node.
--> see pics in attachement
When doing LOTDB the system message log shows an error -->
MType:10, Code:19 DCTA100 TTD Aborted
At the same time two other errors occured.
MType:30, Code:23 Database Error and
MType:26, Code:6 Internal Error - Table Index out of range (see attachements)
Is there any possibility to find out which error occurs stopping DCTA100 task?