李老板：
MD 27860 =7H可读取：
Bit 0 = 1
Measurement of total operating time for all part programs is active
($AC_OPERATING_TIME)
Bit 1 = 1
Measurement of current program runtime is active ($AC_CYCLE_TIME)
Bit 2 = 1
Measurement of tool operation time is active ($AC_CUTTING_TIME)

您可以通过在HMI画面中（好像是在参数画面中，回头我再试试）通过增加系统变量来读这三个变量的数据，或者用PLC程序通过NC-VAR来读，然后在自己做个画面显示（这个我做过项目）。

还有两个应该是一直有效的，直接用就可以了。
Timers ? always active
 Time since the last ”Control power?up with default values” ( in minutes ):
$AN_SETUP_TIME (read?only)
”Power?up of the control system with default values” will reset it to zero automatically.
 Time since the last ”Power?up of the control system” ( in minutes ):
$AN_POWERON_TIME (read?only)
”It is reset to zero automatically with each power?up of the control system.