关于zone_state和zone_state_fine,有人了解吗 [复制链接]

关于zone_state和zone_state_fine,有人了解吗，求较详细的解释，其计算过程是怎样的

shearnow = 1                                     ;shearnow、tensionnow
  tensionnow = 2                                   ;shearpast、tensionpast
  shearpast = 4                                    ;的state value分别为1、2、4、8
  tensionpast = 8                                  ;具体内容参见fish reference 2.5.3.3


if and(z_state(p_z,0),shearnow) = shearnow then ;判断语句,判断单元如果是shearnow状态