Force I/O SIL 3 AC800M HI


I have issues getting IO forcing to work on my test system.

SoftController running as HI

HW simulated

OPC server running

OPC Access Level set to "Confirm and Access Enable" in Application, Program and Function Block. See Confirmed.docx

Faceplate shows forceOn symbol. When I press this the symbol goes gray and the popup is shown. But when pressing Yes in popup the force symbol goes back to yellow without activating the IO forcing. See faceplate.docx

Forces set to max 10. See no of forces.docx

I think the user structure is correct, but the system/user part of 800xA is not my strongest side.

What I'm I missing?

Hope somebode can help me :-)



 no of forces.docx

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Mr Control   

asked 2 months ago



The SIL Access level Set to "Confirm write"

Confirmed Write Support Confirmed Write Support is a function for enabling secure operation on objects in a SIL classified application. The Confirmed Write Support function brings up a Confirm Operation dialog, enabling the operator to verify and acknowledge the operation to be performed,

Basappa G   

answered 2 months ago


By Mr Control on 1/18/2018 | Like (0) | Report

thnaks but in my case the Confirmed Write popup is shown. But when I press SetForce it just goes back to yellow. I think it is user role problem. I did export the application to a different computer and there I can force.

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Please check all top level POU of the object are also set OPC access level as "Confirm" or "Confirm and Access Enable".

Those POU shall include Application --> Programs/Single Control Modules/Diagrams.


answered 2 months ago


By Mr Control on 1/18/2018 | Like (0) | Report

thanks for the answer but I have done what you propose allready. When I start my application in another PC it works fine. Confused

By Kumaraswamy.B on 1/18/2018 | Like (0) | Report

oh ok, please check logged on user is assigned with safety operator role.

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