Tony created the PCAL{X,Y}_STAT nodes a few weeks ago, and has been monitoring and testing over that time. They look to be working as intended, flagging any major issues with the PCAL system. I've now removed them from the excluded nodes list that the IFO node looks at so that now if either of these nodes is out of its nominal state or the node is not OK==True, then the IFO node will not be OK and we will not be able to go to Observing.