CODESYS - the IEC 61131-3 automation software

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PostPosted: Mon Feb 11, 2019 11:22 am 
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Joined: Mon Jan 21, 2019 1:16 pm
Posts: 1
Hi,

I working on updating a set of unit tests written under CODESYS V3.5 SP9 Patch 5 so that it runs under CODESYS V3.5 SP13 Patch 2. The tests run fine under the former version.
However, under the latter I have run into "Exception: Value cannot be retrieved: Too many expressions" which, as far as I understand, signifies that the number of values that is to be retrieved is too large for the CODESYS buffer to handle. I have tried running a test with significantly smaller number of inputs and outputs and it works fine.
My questions are as follows:
- What has changed between those versions of CODESYS that the described behaviour is observed?
- How can this problem be remedied? Perhaps there has been introduced another function which I should be using?

Best regards,

Janusz


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