About antivirus module

I use free comodo firewall v7.0.317799.4142and avast antivirus, ı want ask comodo antivirus module is active or not, because ı see antivirus scan buton, it is for ondemand scan or provide active antivirus protection?

The Scan button is for on demand scans. To see if the AV is running in the background see what it says in the main screen under Real Time Protection.