HIMA F3212A机器人模块卡件
0 mA对应于0的计数，20 mA对应于32000的计数。在4至20 mA和0至20 mA范围内，可提供完整的12位分辨率。还可以配置4至20 mA增强范围。在该范围内，0 mA对应于-8000的计数，4 mA对应于0（零）的计数，20 mA对应于+32000的计数。可设置低报警限值以检测4 mA至0 mA的输入电流，从而在4至20 mA的应用中提供开路故障检测。4电流（mA）4至20mA范围0 20 0 0至20mA范围缩放数据单位（十进制）4000图281：输入缩放ALG233模拟值在转换器范围内缩放。工厂校准将每位模拟值（分辨率）调整为满量程的倍数（4μa/位）。此校准使正常的12位转换器具有4000个计数（通常212＝4096个计数）。数据在模拟范围内以4000个计数进行缩放。数据的比例如上所示。9.9.5.4变化率警报PACSystems*RX3i系统手册第10节GFK-2314T 2019年9月模拟输入模块404 ALG233可检测每秒工程单位的负变化率和正变化率。当任何一个“变化率”参数配置为非零时，模块将取上一个样本和当前样本之间的工程单位差，然后除以样本之间的经过时间。如果工程单位从上一个样本到当前样本的变化为负值，则模块将比率变化与负值变化率参数进行比较。如果样本之间的工程单位变化为正值，则模块将比率变化与正值变化率参数值进行比较。在任何一种情况下，如果变化率大于配置的变化率，则会发生变化率警报。模块在报警后采取的行动取决于已在诊断报告启用和故障报告启用参数中设置的已启用变化率行动。变化率采样率参数确定模块比较变化率的频率。可用于此参数的最小值为60ms，即，模块可在每60ms后比较变化率。当CPU转换到RUN模式或模块现场电源循环时，ALG233在启动变化率检测前等待100ms。这是为了忽略输入信号中的任何毛刺。9.9.5.5模块状态数据：ALG233 9.9.5.6信道输入数据：ALM233模块以其配置的输入字报告其信道输入数据，从其分配的信道开始0 mA corresponds to a count of 0 and 20 mA corresponds to a count of 32000. Full 12-bit resolution is available over the 4 to 20 mA and 0 to 20 mA ranges. 4 to 20 mA Enhanced range can also be configured. In that range, 0 mA corresponds to a count of -8000, 4 mA corresponds to a count of 0 (zero) and 20 mA corresponds to a count of +32000. A low alarm limit can be set up to detect input current from 4 mA to 0 mA, providing open-wire fault detection in 4 to 20 mA applications. 4 Current (mA) 4 to 20mA Range 0 20 0 0 to 20mA Range Scaled Data Units (decimal) 4000 Figure 281: Input Scaling ALG233 Analog values are scaled over the range of the converter. Factory calibration adjusts the analog value per bit (resolution) to a multiple of full scale (4 μA/bit). This calibration leaves a normal 12-bit converter with 4000 counts (normally 212 = 4096 counts). The data is scaled with the 4000 counts over the analog range. The data is scaled as shown above. 9.9.5.4 Rate of Change Alarms PACSystems* RX3i System Manual Section 10 GFK-2314T Sept. 2019 Analog Input Modules 404 The ALG233 can detect both Negative Rate of Change and Positive Rate of Change in Engineering Units per Second. When either of the Rate of Change parameters is configured to be non-zero, the module takes the difference in Engineering Units between the previous sample and the current sample, then divides by the elapsed time between samples. If the Engineering Unit change from the previous sample to current sample is negative, the module compares the rate change with the Negative Rate of Change parameter. If the Engineering Unit change between samples is positive, the module compares the rate change with the Positive Rate of Change parameter value. In either case, if the rate of change is greater than the configured rate, a rate of change alarm occurs. The actions taken by the module following the alarm depend on the enabled rate of change actions that have been set up in the Diagnostic Reporting Enable and Fault Reporting Enable parameters. The Rate of Change Sampling Rate parameter determines how frequently the module compares the Rate of Change. The minimum value which can be used with this parameter is 60 ms i.e., the module can compare the rate of change after every 60 ms. When the CPU transitions to RUN mode or the module field power is cycled, the ALG233 waits 100ms before starting Rate of Change detection. This is to ignore any glitches in the input signal. 9.9.5.5 Module Status Data: ALG233 9.9.5.6 Channel Input Data: ALG233 The module reports its channel input data in its configured input words, beginning at its assigned Channel
