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8.1.2 I/O modules

IO模板

The I/O bus of the CPU module is not designed for the connection and disconnection of I/O modules during operation.

CPU模块的IO总线设计为不能再IO模板操作时连接和断开。

Connect or disconnect I/O modules only when the controller is de-energized 只能在CPU断电的情况下连接或者断开IO模板

If an I/O module is connected or disconnected while the system is operating, an unintentional reset or lock up of the controller may be caused.

如果一个IO模板在系统操作时链接或者断开，可能导致控制器的复位或者锁定。

8.2 Replacement of accessories

附件的替换

8.2.1 TD 951F

TD 951F显示单元

If only one display unit is provided, for instance, this unit can be removed from a controller and connected to another controller during operation. A previous deactivation of the TD 951F is not required for this purpose. Press the upper and lower snap-in noses simultaneously to remove or install the TD 951F

如果只提供一个显示单元，例如，这个单元可以从一个控制器移到另一个控制器，为此目的，就不需要停用TD 951F。同时按下上部和下部的卡鼻，取下或者安装TD 951F。

8.2.2 Battery change

电磁更换

Replace the battery with the controller supply voltage ON in order to avoid any data loss.

在控制器有电的情况下更换电池可以避免数据丢失。

Remove the detachable front panel of the CPU module or the display unit installed in this position. For electrical disconnection, carefully unplug the small connector from the battery socket. The used battery can then be removed from the battery compartment or the battery holder by carefully pulling the battery cable. Insert the new battery as described under Insertion of the TA 951F battery on page 89.

将该位置（电池位置）的CPU模板的可拆卸前面板或者显示单元拆掉。因为没有断电，小心的拔出电池插座上的小的连接器，用过的电池可以通过小心的拉动电池线从电池箱中或者电池支架中取出。按照第89页ta951f电池的插入说明插入新电池。

Lithium batteries must not be recharged, opened or thrown into fire. Store the batteries in a dry place. Strictly observe the applicable local environmental regulations during disposal of used batteries. 锂电池不能充电、打开或者扔进火里。在干燥环境保存电池，在处理旧电池时，严格遵守当地使用环境法规。