我在MDA方式下写入HT执行时有12550报警。HT程序在用户循环下。程序如下： N100 PROC HT(INT XYZ) SAVE DISPLOF
N200 IF $P_SEARCH==1 GOTOF FDDN
N300 IF XYZ==$TC_MPP6[9998,1] GOTOF FDDN
N400 MSG("TOOL CHANGE ACTIVE")
N500 T="EMPTY"
N600 M80
N700 M41
N800 SPOS=0
N900 M10
N1000 G53G00G90G40D0Z-100
N1100 G53G00Y2000
N1200 M09
N1300 M82
N1400 STOPRE
N1500 G53G00Y2702.655
N1600 G53G90G00Z-800
N1700 G53G90G01Z-847.374F1000
N1800 STOPRE
N1900 M77
N2000 G04F1
N2100 M06
N2200 M66
N2300 stopre
N2400 G53G60G00Z-847.374D0
N2500 STOPRE
N2600 T=XYZ
N2700 M80
N2800 M41
N2900 SPOS=0
N3000 M10
N3100 STOPRE
N3200 G53G00Y2702.655
N3300 G53G90G01Z-847.374F1000
N3400 STOPRE
N3500 M77
N3600 G04F1
N3700 M06
N3800 M66
N3900 stopre
N4000 G53G60G00Z-100D0
N4100 G53G00Y1500
N4200 M86
N4300 MSG("TOOL CHANGE FINISHED")
N4400 M81
N4500 MSG(" ")
N4600 FDDN:
N4700 STOPRE
N4800 M17
报警说“HT”未定义。请问如何解决，谢谢！