During monitoring, the microcomputer compares {HEAD ~ signals} from the detectors with the corresponding sequence pattern for each working group to monitor {TAIL ~ the working conditions} of the working groups 
to monitor
During monitoring , the microcomputer compares { HEAD ~ signals } from the detectors with the corresponding sequence pattern for each working group to monitor { TAIL ~ the working conditions } of the working groups
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH