RELIANCE 57C332A工控框架
延遲時間-要求輸入保持高于（或低于）報警前延遲時間的限制設置跳閘（變高）。這有助于防止因工藝噪聲而跳閘的有害報警。
延遲時間-要求輸入保持低于（或高于）極限設置加上延遲時間的死區(qū)在警報清除（變低）之前。這有助于防止由于工藝噪聲而導致的警報意外清除。
回鈴-當報警發(fā)生時，導致先前確認的報警需要確認（優(yōu)先級1-4）清除。HI將過程輸入與極限設置進行比較并且當進程等于或高于限制設置。這個當進程較少時，報警狀態(tài)將清除（0）大于極限設置減去死區(qū)。
LO將過程輸入與極限設置進行比較并且當進程等于或小于限制設置。這個當進程較大時，報警狀態(tài)將清除（0）大于極限設置加上死區(qū)。
HI-DEV比較了流程之間的差異
輸入和偏差輸入（P-D）與極限設置，并且在以下情況下將觸發(fā)報警狀態(tài)高（1）：
（P-D）等于或大于極限設置。這個當（P-D）小于限制設置減去死區(qū)。
LO DEV比較了偏差輸入和過程輸入（D-P）與限制設置，它將觸發(fā)報警狀態(tài)高（1）
當（D-P）等于或大于極限時背景當（D-P）為時，報警狀態(tài)將清除（0）小于極限設置減去死區(qū)。
DEV比較了過程輸入和偏差輸入|P-D|與限制設置，它將觸發(fā)報警狀態(tài)高（1）當|P-D|等于或大于極限設置時。當|P-D|小于時，報警狀態(tài)將清除（0）極限設置減去死區(qū)。或?qū)⑦^程輸入與范圍指針參數(shù)引用的范圍限制進行比較，并將觸發(fā)報警狀態(tài)高（1）當過程等于或大于上限或等于或小于下限時。
當進程小于上限減去死區(qū)或大于下限加上死區(qū)。通電-在熱啟動期間，所有報警的處理方式與熱啟動期間相同：輸出初始化在最后一個狀態(tài)下，所有先前確認的報警都被視為已確認，任何新的報警都將被在第一掃描周期上處理。冷啟動時，所有報警輸出均初始化為0，所有報警均復位，任何
基于塊輸入的新報警將在第一個掃描周期內(nèi)處理。在冷起動期間，報警將由PU啟用參數(shù)確定啟用或禁用。報警狀態(tài)報警狀態(tài)可通過Modbus通信或本地儀表鏈路選項進行報警管理
在遠程位置。報警狀態(tài)在具有Modbus通信的線圈中可用，或相同信息為：
通過LIL通信打包成單個字（報警狀態(tài)字）。有關詳細信息，請參見本文件的網(wǎng)絡通信部分。
HI compares the process input with the limit setting and it will trip the alarm status high (1) when the process is equal to or higher than the limit setting. The alarm status will clear (0) when the process is less than the limit setting minus the deadband. LO compares the process input with the limit setting and it will trip the alarm status high (1) when the process is equal to or less than the limit setting. The alarm status will clear (0) when the process is greater than the limit setting plus the deadband. HI DEV compares the difference between the process input and the deviation input (P-D) with the limit setting and it will trip the alarm status high (1) when (P-D) is equal to or greater than the limit setting. The alarm status will clear (0) when (P-D) is less than the limit setting minus the deadband. LO DEV compares the difference between the deviation input and the process input (D-P) with the limit setting and it will trip the alarm status high (1) when (D-P) is equal to or greater than the limit setting. The alarm status will clear (0) when (D-P) is less than the limit setting minus the deadband. DEV compares the absolute difference between the process input and the deviation input |P-D| with the limit setting and it will trip the alarm status high (1) when |P-D| is equal to or greater than the limit setting. The alarm status will clear (0) when |P-D| is less than the limit setting minus the deadband. OR compares the process input with the range limits referenced by the range pointer parameter and will trip the alarm status high (1) when the process is equal to or greater than the high limit or equal to or less than the low limit. The alarm status will clear (0) when the process is less than the high limit minus the deadband or greater than the low limit plus the deadband. POWER UP - During a warm start, all alarms will be handled the same as during a hot start: outputs are initialized at the last state, all previously acknowledged alarms are treated as acknowledged, and any new alarms will be processed on the first scan cycle. On a cold start, all alarm outputs are initialized at 0, all alarms are reset and any new alarms, based on the block inputs, will be processed during the first scan cycle. Also, during a cold start, alarms will be enabled or disabled as determined by the PU ENable parameters. Alarm Status Alarm status is available with Modbus communication or the Local Instrument Link option for alarm management at a remote location. The alarm status is available in coils with Modbus communication or the same information is packed into a single word (Alarm Status Word) with LIL communication. Detailed information can be found in the Network Communications section of this document.
