HIMA F1107脈沖輸入卡件
t模塊將CPU的浮點值轉(zhuǎn)換為其配置范圍的整個范圍內(nèi)的電壓或電流輸出。例如，如果信道的范圍為4至20mA，則模塊接受4.000至20.000的信道輸出值。通過修改四個信道縮放參數(shù)（低/高縮放值參數(shù)）中的一個或多個，可以針對特定應用更改縮放工程單位范圍?？s放始終是線性的，可以進行逆縮放。所有報警值都適用于縮放的工程單位值，而不是A/D單位值?？s放參數(shù)僅設置兩組對應值之間的線性關(guān)系。它們不一定是輸出的極限。示例在本示例中，應用程序應將32000計數(shù)解釋為+10 Vdc，-32000計數(shù)解釋為-10 Vdc。以下信道配置將將±10 Vdc輸出信道縮放至±32000計數(shù)。信道值格式=16位整數(shù)高量程值（Eng單位）=32000.0低量程值（英制單位）=-3200.00高量程值，（A/D單位）=10.000低量程值第12節(jié)GFK-2314T 2019年9月模擬輸出模塊460信道參數(shù)（續(xù)）參數(shù)默認說明高報警（英制單位）默認值取決于配置的范圍。所有報警參數(shù)均以工程單位指定。當達到或低于（高于）配置值時，將觸發(fā)低（高）報警。低報警（工程單位）輸出啟用斜坡率（工程單位（Eng Units））0.0正常運行期間輸出將發(fā)生變化的工程單位速率。默認斜坡速率（工程單位）0.0如果發(fā)生故障或未啟用輸出，輸出將改變的工程單位速率。輸出鉗位啟用禁用啟用/禁用。請參閱以下說明。上限（英制單位）默認值取決于配置的量程。上限必須大于下限。此參數(shù)可用于將輸出限制在比其配置的范圍類型更窄的范圍內(nèi)。例如，為-10 Vdc至+10 Vdc配置的信道可能被限制為-8V至+7.5V。下限限值（英制單位）默認值（英制單元）0.0。如果禁用保持最后狀態(tài)，則當CPU未處于輸出啟用模式或在特定故障條件下時，命令輸出進入默認值。用戶偏移（Eng Units）0.0可用于更改通道基礎的可配置值。該值在報警檢查之前添加到通道的縮放值。10.3.13.3下限、上限和警報：ALG704和ALG708警報可用于指示模塊何時被命令滿足或超過每個通道的配置上限或下限。這些設置在六個可配置報警觸發(fā)點：? 高報警
he module converts a floating-point value from the CPU into a voltage or current output over the entire span of its configured Range. For example, if the Range of a channel is 4 to 20mA, the module accepts channel output values from 4.000 to 20.000. By modifying one or more of the four channel scaling parameters (Low/High Scale Value parameters) from their defaults, the scaled Engineering Unit range can be changed for a specific application. Scaling is always linear and inverse scaling is possible. All alarm values apply to the scaled Engineering Units value, not to the A/D units value. The scaling parameters only set up the linear relationship between two sets of corresponding values. They do not have to be the limits of the output. Example In this example, the application should interpret 32000 counts as +10 Vdc and –32000 counts as -10 Vdc. The following channel configuration will scale a ±10 Vdc output channel to ±32000 counts. Channel Value Format = 16-bit Integer High Scale Value (Eng Units) = 32000.0 Low Scale Value (Eng Units) = -32000.0 High Scale Value (A/D Units) = 10.000 Low Scale Value (A/D Units) = -10.000 Voltage -10,000 +10,000 -32,000 Counts 32,000 PACSystems* RX3i System Manual Section 12 GFK-2314T Sept. 2019 Analog Output Modules 459 Figure 306: Channel Scaling Example PACSystems* RX3i System Manual Section 12 GFK-2314T Sept. 2019 Analog Output Modules 460 Channel Parameters (Continued) Parameter Default Description High Alarm (Eng Units) The defaults depend on the configured Range. All of the alarm parameters are specified in Engineering Units. When the configured value is reached or below (above), a Low (High) Alarm is triggered. Low Alarm (Eng Units) Outputs Enabled Ramp Rate (Eng Units) 0.0 The rate in Engineering Units at which the output will change during normal operation. Default Ramp Rate (Eng Units) 0.0 The rate in Engineering Units at which the output will change if a fault condition occurs or if outputs are not enabled. Output Clamping Enabled Disabled Enabled / Disabled. Refer to description below. Upper Clamp Limit (Eng Units) The defaults depend on the configured Range. The Upper Clamp Limit must be greater than the Lower Clamp Limit. This parameter can be used to restrict the output to a range that is narrower than its configured Range Type. For example, a channel configured for –10 Vdc to +10 Vdc could be restricted to -8V to +7.5V. Lower Clamp Limit (Eng Units) Default Value (Eng Units) 0.0 If Hold Last State is disabled, the output is commanded to go to the Default Vale when the CPU is not in Outputs Enabled mode or under certain fault conditions. User Offset (Eng Units) 0.0 A configurable value that can be used to change the base of the channel. This value is added to the scaled value of the channel before alarm-checking. 10.3.13.3 Lower, Upper Clamp and Alarms: ALG704 and ALG708 Alarms can be used to indicate when the module has been commanded to meet or exceed the configured high or low limits for each channel. These are set at six configurable alarm trigger points: ? High Alarm
