Xbee sleep maximum period

Is it possible to configure xbee/zigbee device to sleep longer then 28 seconds in cyclic sleep mode. I have seen in examples that 5 minutes is configured but in XCTU max sleep period is AF0(28000 ms)

Max sleep time can be SP x SN when SO is properly configured.

Thanks. SO set to 0x04
Total sleep time is not accurate but will do

Correct. Setting the SO to a value of 4 will allow it to sleep for extended time frames.