IS200TRLYH1C处理器卡件,机器人卡件
%AI寄存器中的用户数据处于16位2的补码状态（仅限范围）。转换后的sigl的分辨率为12位biry（4096分之一）。来自A/D转换器的12位在%AI数据字中的位置如下所示。X D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 X X MSB LSB X=t适用于本讨论。电流输入和来自A/D转换器的数据之间的关系如下所示。4 A/D位（分）电流a4647 0 20 0 4000范围图12-1。A/D位与电流输入如果电流源反向输入，或小于电流范围的低端，则模块将产生与电流范围低端相对应的数据字（0000H，%AI）。如果输入的输入超出范围（即大于20），A/D转换器将达到满量程（对应于%AI中的7FFFH）。电压操作在0到+10 V的默认范围内，用户数据被缩放，使得0伏对应于0的计数，+10伏对应于32000的计数。通过使用Logicster 90-30/20/Micro组态软件或手持式编程器更改A/D（分）CURRENT a44654 0 20 0 4000 range IC693ALG442 Alog Combination I/O Module 12 GFK–0898F第12章–IC693ALGA442 AlogCombition I/O Module 12-5组态参数，选择-10至+10伏范围。在–10至+10伏范围内，用户数据被缩放，因此–10伏对应于–32000的计数，+10伏对应于+32000的计数。在任何一个范围内都可以提供完整的12位分辨率。由于在模拟输入中使用的转换器是12位转换器，所以数据表中的所有16位都包含转换所需的数据。12位的版本被放置在对应于模拟点的16位数据字内（在%AI表中）。Series 90-30 PLC系统以不同方式处理各种模拟模块的集成。在将数据放入%AI数据表中的单词之前，不会对输入的数据进行操作。%AI数据表中未被输入用于转换的位被模拟输入强制为0（零）。单极范围内16-alog电压输入模块的模拟电流输入数据字的A/D转换器的12个数据位的位置如下所示。在转换器的范围内缩放转换的位Alog值。工厂校准将每位模拟值（分辨率）调整为满刻度的倍数（即，单极为2.5位；双极为5位）。此校准使rl 12位转换器具有4000个计数（rlly 212=4096个计数）。然后，在alog范围内使用4000个计数对数据进行缩放。例如，Alog电压输入的A/D转换器数据按如下所示缩放。A/D位（分）电压；V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 GFK–0898F IC693ALG442模式和电流/电压范围电流操作范围内的用户数据按比例缩放，使4对应于计数0，20对应于计数32767。在该范围内，用户数据被缩放，使得0对应于0的计数，20对应于32000。注意，在该模式下，您可以输入一个高达32767的值，提供大约20.5的值。该范围和范围的电流比例如下所示。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（分）电流A4683 0 20 0 32000范围%AQ（分）当前a44684 0 20 0 3200范围图12-3。电流电压操作的缩放对于默认单极模式（0至+10伏）下的电压操作，缩放用户数据，以使0伏对应于0的计数，+10伏对应于32000的计数。在此模式下，您最多可以输入32767，以获得大约10.24伏的超范围。在–10至+10伏范围内，用户数据被缩放，因此–10伏对应于–32000的计数，+10伏对应于+32000的计数。在此范围内，您可以输入–32768到+32767，以获得大约–10.24伏到+10.24伏的超范围。
User data in the %AI registers is in 16-bit 2’s complement fort ( range only). Resolution of the converted sigl is 12 bits biry (1 part in 4096) on the range. The placement of the 12 bits from the A/D converter in the %AI data word is shown below. X D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 X X X MSB LSB X=t applicable to this discussion. The relationship between the current input and the data from the A/D converter is show below. 4 A/D BITS (decil) CURRENT a44647 0 20 0 4000 RANGE Figure 12-1. A/D Bits vs. Current Input If the current source is reversed into the input, or is less than the low end of the current range, then the module will a data word corresponding to the low end of the current range (0000H in %AI). If an input that is out of range is entered (that is, it is greater than 20 ), the A/D converter will up to full scale (corresponding to 7FFFH in %AI). Voltage Operation In the 0 to +10 V default range, user data is scaled so that 0 volts corresponds to a count of 0 and +10 volts corresponds to a count of 32000. The –10 to +10 volt range is selected by changing the A/D (decil) CURRENT a44654 0 20 0 4000 RANGE IC693ALG442 Alog Combition I/O Module 12 GFK–0898F Chapter12 – IC693ALG442 Alog Combition I/O Module 12-5 configuration parameters using the Logicster 90-30/20/Micro configurator software or the Hand-Held Programmer. In the –10 to +10 volt range user data is scaled so that –10 volts corresponds to a count of –32000 and +10 volts corresponds to a count of +32000. Full 12-bit resolution is ailable over either range. Since converters used in the alog input s are 12-bit converters, t all of the 16 bits in the data tables contain data required for the conversion. A version of the 12 bits is placed within the 16-bit data word corresponding to the alog point (in the %AI table). The Series 90-30 PLC system handles the integration differently for the rious alog modules. The does t nipulate the data from the input s before placing it within the word in the %AI data table. The bits in the %AI data table which were t used in the conversion by the input are forced to 0 (zero) by the alog input . Placement of the 12 data bits from the A/D converter for an alog current input data word for the 16- Alog Voltage Input module in unipolar range is shown below. converted bits Alog lues are scaled over the range of the converter. Factory calibration adjusts the alog lue per bit (resolution) to a multiple of full scale (that is, 2.5 /bit for unipolar; 5 /bit for bipolar). This calibration leaves a rl 12-bit converter with 4000 counts (rlly 212 = 4096 counts). The data is then scaled with the 4000 counts over the alog range. For example, the data to the A/D converter for the Alog Voltage Input is scaled as shown below. A/D BITS (decil) VOLTAGE;V 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 – 2000 GFK–0898F IC693ALG442 Modes and Current/Voltage Ranges Current Operation In the range user data is scaled so that 4 corresponds to a count of 0 and 20 corresponds to a count of 32767. In the range, user data is scaled so that 0 corresponds to a count of 0 and 20 corresponds to 32000. te that in the mode, you can enter a lue up to 32767 which provides a of approxitely 20.5 . Scaling of the current for both the range and the 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 (decil) CURRENT a44683 0 20 0 32000 Range %AQ (decil) CURRENT a44684 0 20 0 32000 Range Figure 12-3. Scaling for Current Voltage Operation For Voltage Operation in the default unipolar mode (0 to +10 volts), user data is scaled so that 0 volts corresponds to a count of 0 and +10 volts corresponds to a count of 32000. In this mode, you can enter up to 32767 for an overrange of approxitely 10.24 volts . In the –10 to +10 volt range user data is scaled so that –10 volts corresponds to a count of –32000 and +10 volts corresponds to a count of +32000. In this range, you can enter –32768 to +32767 for an overrange of approxitely –10.24 volts to +10.24 volts.
