Counters for a given RoI of the Xspress3 can be introduced in the Pool with entries of this type:
<device> <name>xspress3roi1</name> <type>counter</type> <module>xspress3roi</module> <device>p09/xspress3/exp.01</device> <control>tango</control> <hostname>haspp09mono:10000</hostname> </device>
where <module> has to be xspress3roi. The channel of the Xspress3 detector to be used and the RoI have to be given as attributes in the Pool device created for this entry.