HIMA F3237 Z7108 工控模块系统备件
=6.000低量程值（A/D单位）=1.000对于本例，1.0V至6.0V为正常电压范围，但模块将尝试为超出范围的电压缩放输入。如果向通道输入10.0V的电压，模块将返回36.000的缩放通道值。对于超出可接受范围或无效的缩放输入，应用程序应使用警报或其他预防措施。图277：输入缩放ALG232电压（A/D单位）1.000 6.000 0.000 20.000英尺/秒（工程单位）PACSystems*RX3i系统手册第10节GFK-2314T 2019年9月模拟输入模块392 9.8.1.1变化率警报：ALG232 ALG232每秒可以检测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，ALG232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。9.8.1.1.1使用报警-诊断报告启用和故障报告启用配置参数可用于为单个通道报警启用不同类型的响应。默认情况下，在每个通道上禁用所有响应。可以为每个通道启用任何报警组合。▪ 如果启用了诊断报告，模块将在该通道的诊断参考地址的参考存储器中报告通道报警。▪ 如果启用了故障报告，则模块会在I/O故障表中记录每次通道报警的故障日志。PAC系统*
= 6.000 Low Scale Value (A/D Units) = 1.000 For this example, 1.0V to 6.0V is the normal voltage range, but the module will attempt to scale the inputs for a voltage that lies outside the range. If a voltage of 10.0V were input to the channel, the module would return a scaled channel value of 36.000. The application should use alarms or other precautions for scaled inputs that are outside the acceptable range or otherwise invalid. Figure 277: Input Scaling ALG232 Voltage (A/D Units) 1.000 6.000 0.000 20.000 Feet/Second (Engineering Units) PACSystems* RX3i System Manual Section 10 GFK-2314T Sept. 2019 Analog Input Modules 392 9.8.1.1 Rate of Change Alarms: ALG232 ALG232 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 ALG232 waits 100ms before starting Rate of Change detection. This is to ignore any glitches in the input signal. 9.8.1.1.1 Using Alarming The Diagnostic Reporting Enable and Fault Reporting Enable configuration parameters can be used to enable different types of responses for individual channel alarms. By default, all responses are disabled on every channel. Any combination of alarms can be enabled for each channel. ▪ If Diagnostic Reporting is enabled, the module reports channel alarms in reference memory at the Diagnostic Reference address for that channel. ▪ If Fault Reporting is enabled, the module logs a fault log in the I/O Fault table for each occurrence of a channel alarm. PACSystems*
