There are several ways. Log into the cli on the sensor and do a show stat net. You should see the pix listed with a status of active. Next log into the pix. Do a show shun and you should see all current shuns. (NOTE: The active shuns are also shown in the show stat net output for comparison.) In order for the sensor to create shuns on the pix, signatures have to be configured to either shun/block host or shun/block connection (but not both). You can use IDM to create a manual shun if you are not generating automatic alarms.
