RELIANCE 57C332A工控框架
延遲時(shí)間-要求輸入保持高于（或低于）報(bào)警前延遲時(shí)間的限制設(shè)置跳閘（變高）。這有助于防止因工藝噪聲而跳閘的有害報(bào)警。
延遲時(shí)間-要求輸入保持低于（或高于）極限設(shè)置加上延遲時(shí)間的死區(qū)在警報(bào)清除（變低）之前。這有助于防止由于工藝噪聲而導(dǎo)致的警報(bào)意外清除。
回鈴-當(dāng)報(bào)警發(fā)生時(shí)，導(dǎo)致先前確認(rèn)的報(bào)警需要確認(rèn)（優(yōu)先級(jí)1-4）清除。HI將過(guò)程輸入與極限設(shè)置進(jìn)行比較并且當(dāng)進(jìn)程等于或高于限制設(shè)置。這個(gè)當(dāng)進(jìn)程較少時(shí)，報(bào)警狀態(tài)將清除（0）大于極限設(shè)置減去死區(qū)。
LO將過(guò)程輸入與極限設(shè)置進(jìn)行比較并且當(dāng)進(jìn)程等于或小于限制設(shè)置。這個(gè)當(dāng)進(jìn)程較大時(shí)，報(bào)警狀態(tài)將清除（0）大于極限設(shè)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(shè)置，并且在以下情況下將觸發(fā)報(bào)警狀態(tài)高（1）：
（P-D）等于或大于極限設(shè)置。這個(gè)當(dāng)（P-D）小于限制設(shè)置減去死區(qū)。
LO DEV比較了偏差輸入和過(guò)程輸入（D-P）與限制設(shè)置，它將觸發(fā)報(bào)警狀態(tài)高（1）
當(dāng)（D-P）等于或大于極限時(shí)背景當(dāng)（D-P）為時(shí)，報(bào)警狀態(tài)將清除（0）小于極限設(shè)置減去死區(qū)。
DEV比較了過(guò)程輸入和偏差輸入|P-D|與限制設(shè)置，它將觸發(fā)報(bào)警狀態(tài)高（1）當(dāng)|P-D|等于或大于極限設(shè)置時(shí)。當(dāng)|P-D|小于時(shí)，報(bào)警狀態(tài)將清除（0）極限設(shè)置減去死區(qū)?；?qū)⑦^(guò)程輸入與范圍指針參數(shù)引用的范圍限制進(jìn)行比較，并將觸發(fā)報(bào)警狀態(tài)高（1）當(dāng)過(guò)程等于或大于上限或等于或小于下限時(shí)。
當(dāng)進(jìn)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(dòng)期間，所有報(bào)警的處理方式與熱啟動(dòng)期間相同：輸出初始化在最后一個(gè)狀態(tài)下，所有先前確認(rèn)的報(bào)警都被視為已確認(rèn)，任何新的報(bào)警都將被在第一掃描周期上處理。冷啟動(dòng)時(shí)，所有報(bào)警輸出均初始化為0，所有報(bào)警均復(fù)位，任何
基于塊輸入的新報(bào)警將在第一個(gè)掃描周期內(nèi)處理。在冷起動(dòng)期間，報(bào)警將由PU啟用參數(shù)確定啟用或禁用。報(bào)警狀態(tài)報(bào)警狀態(tài)可通過(guò)Modbus通信或本地儀表鏈路選項(xiàng)進(jìn)行報(bào)警管理
在遠(yuǎn)程位置。報(bào)警狀態(tài)在具有Modbus通信的線圈中可用，或相同信息為：
通過(guò)LIL通信打包成單個(gè)字（報(bào)警狀態(tài)字）。有關(guān)詳細(xì)信息，請(qǐng)參見(jiàn)本文件的網(wǎng)絡(luò)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.
