fcv_202_zt_diff, fcv_204_zt_diff, fcv_504_zt_diff, fcv_207_zt_diff, fcv_101_zt_diff, fcv_102_zt_diff

Provides difference between valve setting and actual position.A high value indicates a position fault.

formula

fcv_202/204/504/207_zt_diff = abs(FCV_202/204/504/207/101/102 - FCV_202/204/504/207_ZT/101_ZT/102_ZT)