中文英对照：

滤模拟输入S7--200允许选择单个模拟输入上的软件过滤。过滤数值是模拟输入的样本预选数的平均值。过滤器规格（样本和死区数目）对所有启用过滤功能的模拟输入均相同。
过滤器具有快速应答功能，允许过滤数值快速反映出较大的改动。当输入超出对平均值的指定改动时，过滤器对最新模拟输入值进行步骤功能改动。这一改动被称为死区，用模拟输入数字值计数表示。
默认配置对所有模拟输入启用过滤。
1. 选择视图（View）> 组件（Component）> 系统块SystemBlock）菜单命令并单击模拟输入过滤器标签。
2. 选择想要过滤的模拟输入、样本数和死区。
3. 单击“确定”。
4. 下载修改的系统块到S7--200。

The S7-200 Allows You to Filter the Analog Inputs
The S7-200 allows you to select software filtering on individual analog inputs. The filtered value is the average value of a preselected number of samples of the analog input. The filter specification (number of samples and deadband) is the same for all analog inputs for which filtering is enabled.
The filter has a fast response feature to allow large changes to be quickly reflected in the filter value. The filter makes a step function change to the latest analog input value when the input exceeds a specified change from the current value. This change, called the deadband, is specified in counts of the digital value of the analog input.
The default configuration is to enable filtering for all analog inputs.
1. Select the View > Component > System Block menu command and click on the Analog Input Filters tab.
2. Select the analog inputs that you want to filter, the number of samples, and the deadband.
3. Click OK.
4. Download the modified system block to the S7-200.