UNS2880B-P,V1 3BHE014967R0001勵磁系統模塊,DCS卡件使用COMM\U REQ命令將模塊ALG442上的輸出設置為在斜坡模式下運行。在正常情況下工作模式下，在輸出通道的%AQ參考中輸入的新值會導致輸出直接改變到新值。在斜坡模式下，輸出在一段時間內變為新值。輸出通道每當其%AQ參考中的值發生變化時，開始一個新的漸變（向上或向下）。
UNS2880B-P,V1 3BHE014967R0001勵磁系統模塊模塊執行對新輸出值進行范圍檢查，并在進行斜坡之前自動調整超出范圍的值計算。使用COMM\U REQ命令為任一通道或兩個輸出通道設置斜坡模式的使用。這個斜坡坡度可以在COMM\U REQ中設置為：? 從1毫秒到32秒的總斜坡時間，或：? 1到32000個1毫秒步長的序列。通道保持在斜坡模式，直到模塊接收到新的COMM\U REQ，改變或取消斜坡運行，或直到功率循環。在硬件配置后，通道不會改變模式下載由于COMM_REQ設置是臨時的，因此在通電后會丟失。如果模塊收到一個新的COMM\U REQ，在輸出過程中改變斜坡操作斜坡，新的斜坡設置生效如下：? 如果在斜坡期間關閉斜坡模式，通道將直接轉到其%AQ參考中的值。? 如果通道設置為在一段時間內斜坡，但接收到新的COMM\U REQ命令通道在一系列測量步驟中變坡，一旦處理COMM_REQ（假設步驟有效）。? 如果通道設置為按測量步驟序列斜坡，但收到新的COMM\U REQ命令通道在一段時間內變坡，它立即使用當前輸出作為起始輸出，當前時間作為起始時間。如果模塊接收到無效通道、步長或斜坡時間的斜坡命令，則模塊忽略命令并在其%I狀態引用的第一個字節中返回錯誤代碼。可以通過以下方式清除錯誤代碼：清除錯誤COMM_REQ，或重新配置模塊。
Use of Ramp mode is set up for either channel or both output channels using a COMM_REQ command. The
ramp slope can be set up in the COMM_REQ as:
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a total ramp time from 1 millisecond to 32 seconds, or:
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a sequence of 1 to 32000 1-millisecond steps.
A channel stays in Ramp mode until the module receives a new COMM_REQ either changing or canceling the
ramp operation, or until power is cycled. The channel will not change modes after a hardware configuration
download. Because COMM_REQ settings are temporary, it will be lost after a power cycle.
If the module receives a new COMM_REQ that changes ramp operation while an output is in the process of
ramping, the new ramp settings take effect as follows:
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If Ramp mode is turned off during a ramp, the channel goes directly to the value in its %AQ reference.
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If a channel is set up to ramp over a period of time, but a new COMM_REQ is received commanding the
channel to instead ramp in a sequence of measured steps, ramp operation changes as soon as the
COMM_REQ is processed (assuming that the step is valid).
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If a channel is set up to ramp as a sequence of measured steps, but a new COMM_REQ is received
commanding the channel to instead ramp over a period of time, it immediately starts a new ramp using the
present output as the starting output and the present time as the start time.
If the module receives a Ramp command for an invalid channel, step height or ramp time, the module ignores the
command and returns an error code in the first byte of its %I status references. The error code can be cleared by
a Clear Errors COMM_REQ, or by reconfiguring the module.
