step7 force table

I cannot open the force values, while I m receiving this error.

Hello radu,ch;

Without basic information on the CPU you are working with and on the software version you are using, it is hard to give you any complete reoly.

Since your screenshot seems to be taked from a Step 7 v5.x program, here is an extract from the Programming with Step 7 v5.5 manual:, section 20.4.7, discussing force tables:

In the Force Values Window

• When forcing with S7-300 modules, only inputs, outputs, and I/O (outputs) are allowed.

• When forcing with S7-400 modules, only inputs, outputs, bit memory, and I/O (inputs/outputs)are allowed.

https://support.industry.siemens.com/cs/ww/en/view/45531107

Hope this helps,

Daniel Chartier