我公司有一台840D系统MMC103,NCU为573.3,原采用全闭环控制,现出现X轴振动大,一按手动移动键,轴就振动,你松了按钮,还是振动,必须按急停才能停止,现我们怀疑是丝杆有问题,想采用半闭环控制来检测一下,但是切换不了,因为它原来机床参数就是电机编码器控制,但是我一但把光栅返馈线去掉就报警,PLC侧也是DBX1.5为1,DBX1.6为0.附部分机床数据.请高手指点.谢谢!!!

N30100 $MA_CTRLOUT_SEGMENT_NR[0,AX1]=1 '6476
N30110 $MA_CTRLOUT_MODULE_NR[0,AX1]=1 '562a
N30120 $MA_CTRLOUT_NR[0,AX1]=1 '46f6
N30130 $MA_CTRLOUT_TYPE[0,AX1]=1 '4c0a
N30132 $MA_IS_VIRTUAL_AX[0,AX1]=0 '407c
N30200 $MA_NUM_ENCS[AX1]=1 '44fa
N30210 $MA_ENC_SEGMENT_NR[0,AX1]=1 '5676
N30210 $MA_ENC_SEGMENT_NR[1,AX1]=1 '570c
N30220 $MA_ENC_MODULE_NR[0,AX1]=1 '485e
N30220 $MA_ENC_MODULE_NR[1,AX1]=1 '48c2
N30230 $MA_ENC_INPUT_NR[0,AX1]=2 '4bde
N30230 $MA_ENC_INPUT_NR[1,AX1]=1 '4a78
N30240 $MA_ENC_TYPE[0,AX1]=4 '3bbc
N30240 $MA_ENC_TYPE[1,AX1]=0 '3bde
N30242 $MA_ENC_IS_INDEPENDENT[0,AX1]=0 '513c
N30242 $MA_ENC_IS_INDEPENDENT[1,AX1]=0 '51d2
N30250 $MA_ACT_POS_ABS[0,AX1]=0 '4b5e
N30250 $MA_ACT_POS_ABS[1,AX1]=0 '4c26
N30260 $MA_ABS_INC_RATIO[0,AX1]=160 '55fe
N30260 $MA_ABS_INC_RATIO[1,AX1]=4 '53f4
N30300 $MA_IS_ROT_AX[AX1]=0 '41ba
N30310 $MA_ROT_IS_MODULO[AX1]=0 '543c
N30320 $MA_DISPLAY_IS_MODULO[AX1]=0 '573a
N30330 $MA_MODULO_RANGE[AX1]=360 '4e7c
N30350 $MA_SIMU_AX_VDI_OUTPUT[AX1]=0 '671e
N30450 $MA_IS_CONCURRENT_POS_AX[AX1]=0 '6cb8
N30500 $MA_INDEX_AX_ASSIGN_POS_TAB[AX1]=0 '6d86
N30501 $MA_INDEX_AX_NUMERATOR[AX1]=0 '4c80
N30502 $MA_INDEX_AX_DENOMINATOR[AX1]=1 '5d08
N30503 $MA_INDEX_AX_OFFSET[AX1]=0 '50d4
N30505 $MA_HIRTH_IS_ACTIVE[AX1]=0 '4b90
N30550 $MA_AXCONF_ASSIGN_MASTER_CHAN[AX1]=0 '7ad4
N30552 $MA_AUTO_GET_TYPE[AX1]=1 '48ea
N30600 $MA_FIX_POINT_POS[0,AX1]=0 '4d42
N30600 $MA_FIX_POINT_POS[1,AX1]=0 '4da6
N30800 $MA_WORKAREA_CHECK_TYPE[AX1]=0 '64a0
N31000 $MA_ENC_IS_LINEAR[0,AX1]=1 '4512
N31000 $MA_ENC_IS_LINEAR[1,AX1]=0 '4544
N31010 $MA_ENC_GRID_POINT_DIST[0,AX1]=0.016 '6906
N31010 $MA_ENC_GRID_POINT_DIST[1,AX1]=0.01 '6746
N31020 $MA_ENC_RESOL[0,AX1]=2048 '4470
N31020 $MA_ENC_RESOL[1,AX1]=2048 '44d4
N31030 $MA_LEADSCREW_PITCH[AX1]=20 '4cfc
N31040 $MA_ENC_IS_DIRECT[0,AX1]=0 '45ce
N31040 $MA_ENC_IS_DIRECT[1,AX1]=0 '4632
N31050 $MA_DRIVE_AX_RATIO_DENOM[0,AX1]=1 '599a