The error reson is as follows: rdi(2), rdi-clear(3), loc(4), loc-clear(5), unexpected-mep(6), unexpected-mep-clear(7), unexpected-period(8), unexpected-period-clear(9), mismerge(10), mismerge-clear(11), unexpected-meg-level(12), unexpected-meg-level-clear(13), recieve-ais(14), no-receive-ais-in-35-period(15), lck-receive-cause-ais(16), lck-receive-cause-ais-clear(17), enter-lck-condition(18), exit-lck-condiftion(19), enter-csf-condition(20), exit-csf-condition(21), rmep-first-packet-receive(22)