G3EA HENF315754R1计数器模块

4000计数（通常212＝4096计数）。然后用模拟范围内的4000个计数对数据进行缩放。例如，模拟电压输入的A/D转换器数据按如下所示进行缩放。A/D位（十进制）电压；0至10V范围a45717 0 10 0 4000图12-2。A/D位与电压输入12 12-6系列90–30 PLC I/O模块规格–2000年7月GFK–0898F IC693ALG442输出模式和电流/电压范围电流操作在4至20 mA范围内，用户数据按比例缩放，使4 mA对应于0计数，20 mA对应于32767计数。在0至20 mA范围内，用户数据被缩放，使得0 mA对应于0的计数，20 mA对应于32000。注意，在0至20 mA模式下，您可以输入一个高达32767的值，该值提供大约20.5 mA的大输出。4至20 mA范围和0至20毫安范围的电流输出比例如下所示。在当前模式下，模块还提供开环故障检测，并在%I表中报告给PLC。4%AQ（十进制）电流（mA）4000 counts (normally 212 = 4096 counts). The data is then scaled with the 4000 counts over the analog range. For example, the data to the A/D converter for the Analog Voltage Input is scaled as shown below. A/D BITS (decimal) VOLTAGE; 0 to 10V RANGE a45717 0 10 0 4000 Figure 12-2. A/D Bits vs. Voltage Input 12 12-6 Series 90–30 PLC I/O Module Specifications – July 2000 GFK–0898F IC693ALG442 Output Modes and Current/Voltage Ranges Current Operation In the 4 to 20 mA range user data is scaled so that 4 mA corresponds to a count of 0 and 20 mA corresponds to a count of 32767. In the 0 to 20 mA range, user data is scaled so that 0 mA corresponds to a count of 0 and 20 mA corresponds to 32000. Note that in the 0 to 20 mA mode, you can enter a value up to 32767 which provides a maximum output of approximately 20.5 mA. Scaling of the current output for both the 4 to 20 mA range and the 0 to 20 mA range is shown below. In current mode the module also provides an open loop fault detect which is reported to the PLC in the %I table. 4 %AQ (decimal) CURRENT (mA)