求翻译：2、上位机（PC机或主PLC）通过串口连接到本控制器后，向控制器发送一串ASCII代码指令即可控制某个（或全部）继电器打开或关闭，完全不必要考虑继电器的硬件电路上选择、驱动等问题。比如，串口输入O(00,002, 1)则地址位为00的控制器的第2号继电器通电吸合；串口输入“O(00,012, 0)”，则地址位为00的控制器的第12号继电器失电断开。是什么意思？

2, the host computer (pc, or Master plc) through the serial port connected to the controller, the controller sends commands to control a string of ascii code of a (or all) of the relay on or off, completely unnecessary to consider relay select the hardware circuit, driver and other issues. For examp

2, upper machine (PC machine or the main PLC) through a serial port connected to the Controller, the Controller sends a string instruction ASCII code can control a relay (or all) open or closed, it is not necessary to take into account the hardware circuit relays on issues such as selection, drive.

2nd, on the position machine (PC machine or advocates PLC) to connect this controller after the serial port, transmits a string ASCII code instruction to the controller then to control some (either the relay opens or the closure completely), not essential considered completely the relay on the hardw

2, the host computer (PC or PLC) through the serial port is connected to the controller, the controller sends a string of ASCII code directives to control a (or all) relays open or closed, completely not necessary to select relay circuit to consider, driving and other issues. For example, the serial