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博世力士樂電機動力器動力器維修服務查測：

F644 Negative Travel Limit Switch Detected

查重到負里程限位面板開關面板開關

 The negative travel limit switch has been actuated. The axis has been

 stopped with the error reaction "set velocity command value to zero". Bit 2

 of P-0-0090, Travel limit parameter has been set to "Exceeding the

 travel limit is considered as an error", or a drive control command has

 been started while the axis limit value is exceeded (e.g. drive-controlled

homing).

 負旅行路線行程旋鈕旋鈕已通電。軸已以腳本錯誤反映“將強度運行命令值安裝為零”退出。第2位P-00090中，行程英文受限制運作已設為為“多于過程制約被被視為錯誤代碼”，或能夠操縱操作命令已在多于軸超凡值時啟動的（這類，能夠操縱歸位）。

Cause:因為：

 The negative travel limit switch has been actuated

負里程定位按鈕已重啟

Remedial action:修復方式：

1. Reset the error

從置錯誤代碼

2. Activate the power supply

修改密碼電源開關

 3. Move the axis into the permissible working range

將軸移動到合法的工作任務比率內

 Note: The drive will not accept any command values that lead further away from the permissible range. Specifying such a command will again result in this error.注意力：驅動下載器不能進行絲毫避開可以范圍之內的ftpps命令值。制定怎樣的ftpps命令將第三步促使此問題。