Hi,

Can anyone provide a justification for rule SE004 in the Programming Style Guide? I'm curious what the intention was. It says: 

"SE004 Rule: Enable data access via HMI/ OPC UA/ Web API selectively

Thank you! 

Hello Ben,

do you mean this entry? 
https://support.industry.siemens.com/cs/ww/en/view/109741418

Please post your used software version number.

I'm refering to page 37 of the styleguide posted here: https://support.industry.siemens.com/cs/document/109478084/programming-styleguide-for-s7-1200-1500?dti=0&lc=en-ZM (Entry ID:109478084)

I'm using TIA V18 currently but this question is not necessarily specific to a version since the styleguide is not version specific. 

I currently don't use the project check program you linked. If I was to do project checking against the styleguide I would prefer to use the built in functionality of Test Suite Advanced. 

DA005 and DA006 make sense to me with respect to the user program. But outside of the user program for OPC connections it makes less sense to me for compatability reasons.  

For example when I use SIOME and do type linking for IDBs to FBs, I can only map static areas (input, output, and inout are not possible). So when I autogenerate a server interface I can only autogenerate nodes from the static section of IDBs. 

I also see that people using SiVArc tend to access static variables from IDB. So does that mean that Denilson has his simple project set up for SiVArc is incorrect? He is accessing static variables in the HMI. https://support.industry.siemens.com/forum/WW/en/posts/simple-sample-wincc-unified-and-sivarc/265295/?page=0&pageSize=10

I appreciate the discussion.

After further testing I figured that I should create a datatype in SIOME and map any inputs or outputs to that. The server interface generates just fine