Hi,

I have some DI 8x24VDC HS modules in a ET 200SP IM 155-6 PN ST interface module, and programming using TIA Portal V20 with all available updates. They are configured for operation mode “Counting”, but do not appear in the module selection list in the High Speed Counter technology object configuration.

I'm following the documentation available here:
https://support.industry.siemens.com/cs/document/59709820/simatic-s7-1500-et-200mp-et-200sp-et-200al-et-200eco-pn-et-200pro-counting-measurement-and-position-detection?dti=0&lc=en-AU
which indicates the DI 8x24VDC HS modules should be supported.

Is there something I'm missing here?

Thanks,
Patrick

Why do you have a gap in the rack? Have you compiled the configuration?