【正文】 例 : PROGRAM NAME: AHUPPCL100 LOCAL (AH1X,AH2X,AH3X)200 ON($AH1X)300 ……..PROGRAM NAME: CHILPPCL100 IF(“AHUPPCL:$AH1X”.) THEN ON(CHILLER)200 … 1. 以下常用指令請(qǐng)勿必熟悉: 關(guān)系比較指令(.EQ.),(.GE.),(.GT.),(.LE.),(.LT.),(.NE.) 邏輯運(yùn)算指令(.AND.),(.OR.) 數(shù)學(xué)運(yùn)算指令(+),(),(*),(/) 數(shù)學(xué)函數(shù)運(yùn)算指令(.ROOT.),(SQRT),(COM) 特殊函數(shù)指令(TOTAL),(INITTO) 系統(tǒng)常駐指令(DAY),(SECND1 ~ SECND7),(TIME) 區(qū)域變量($ARG1~$ARG15),($LOC1~$LOC15),(LOCAL) 點(diǎn)狀況控制(ALARM),(FAST),(SLOW),(ON),(OFF),(SET) 條件式運(yùn)算指令(IF..THEN),(IF..THEN..ELSE) 特殊功能控制指令(DBSWIT),(DEFINE),(MAX),(MIN),(RELEAS),(OIP) (ONPWRT),(SAMPLE),(TABLE),(TIMAVG),(LOOP) 時(shí)間程序運(yùn)算指令(WAIT),(SAMPLE) 過程控制指令(GOTO…),(GOSUB……RETURN)2. 規(guī)劃每一個(gè)監(jiān)控點(diǎn)的動(dòng)作條件EX SAMPLE 1:(基本過程控制羅輯)說明:1, 當(dāng)AH1EN ON 時(shí) 則順序啟動(dòng)相關(guān)設(shè)備 2, AH1CV 冰水閥 PID控制回風(fēng)溫度 3, 當(dāng)AH1ALM ON時(shí) 則OFF所有設(shè)備 4, 當(dāng)AH1EN ON 時(shí) AH1RAD=70% AH1OAD=30% AH1EN OFF 時(shí) AH1RAD = 100% AH1OAD=0%.監(jiān)控點(diǎn)動(dòng)作條件說明AH1EN系統(tǒng)總控點(diǎn)TOD CONTROLAH1CV冰水閥IF AH1 STATUS EQ ON THEN PID CONTROLELSE SET=AH1ALM系統(tǒng)警報(bào) AHU發(fā)生下列狀況時(shí) ON AH1ALMa, 風(fēng)車跳脫 b, 風(fēng)車回授異常 c,相關(guān)連之消防警報(bào) OFF 時(shí) 自動(dòng)RESET OFF AH1ALMAH1FAN送風(fēng)風(fēng)車 ON時(shí)且AH1ALM OFF 則 ON AH1FAN OFF時(shí) 或 AH1ALM ON時(shí) 則 OFF AH1FANAH1RAD回風(fēng)風(fēng)門1,當(dāng)AH1 STATUS ON 時(shí) 則 RAD=702,當(dāng) AH1 STATUS OFF 時(shí) 則 RAD=100AH1OAD外氣風(fēng)門1,當(dāng)AH1 STATUS ON 時(shí) 則 OAD=302,當(dāng) AH1 STATUS OFF 時(shí) 則 OAD=0程序范例:100 IF() THEN ON(AH1FAN)200 IF() TEHN OFF(AH1FAN)300 LOOP (0 , AH1RAT , AH1CVP , AH1SET , AH1PG , AHIIG , 0 , 1 , , , , 0)400 AH1CV=AH1CVP * ”AH1FANS”500 IF() THEN ON(AH1ALM)600 IF() THEN ON(AH1ALM)700 IF() THEN ON(AH1ALM)800 IF() THEN RELEAS(OPER,AH1ALM)900 IF() THEN OFF(AH1ALM)1000 IF(“AH1FANS”.) THEN SET(,AH1RAD) ELSE SET(,AH1RAD)1100 IF(“AH1RANS”.) THEN SET(,AH1OAD) ELSE SET(,AH1OAD)EX SAMPLE 2: TOTALIZE SELECT說明: 1, 當(dāng)要ON 設(shè)備時(shí),依據(jù)P1,P2,P3之運(yùn)轉(zhuǎn)時(shí)數(shù)選擇最少的啟動(dòng) 2, 當(dāng)要OFF 設(shè)備時(shí), 依據(jù)P1,P2,P3之運(yùn)轉(zhuǎn)時(shí)數(shù)選擇最多的停止P1,P2,P31,TOTALIZE ENABLESTRON觸發(fā)1, 當(dāng)STR ON 時(shí) 則ON P1,P2 OR P3STPOFF 觸發(fā)1, 當(dāng) STP ON 時(shí) 則 OFF P1,P2 OR P3SELEON1, 下一次要ON 之選擇SELEOFF1, 下一次要OFF之選擇10 LOCAL(P1TOL,P2TOL,P3TOL,MINTOL,MAXTOL,SELON,SELOFF)1000 IF(TOTAL(P1).) THEN GOTO 1040 1001 IF(TOTAL(P2).) THEN GOTO 1040 1002 IF(TOTAL(P3).) THEN GOTO 1040 1010 GOTO 1100 1020 GOSUB 1040 P1 1021 GOSUB 1040 P2 1022 GOSUB 1040 P3 1030 GOTO 1100 1040 $LOC1=TOTAL($ARG1) 1041 $LOC2=$LOC19999 1042 INITTO($LOC2,$ARG1) 1049 RETURN 1097 C /// LINE 1100 ~ 1098 C /// CHECK TOTALIZE ACTION FOR EQUIPMENT CONTROL /// 1099 C /// 1100 IF (P1) THEN $P1TOL = 32767 ELSE $P1TOL = TOTAL(CH1EN) 1110 IF (P2) THEN $P2TOL = 32767 ELSE $P2TOL = TOTAL(CH2EN) 1120 IF (P3) THEN $P3TOL = 32767 ELSE $P3TOL = TOTAL(CH3EN) 1130 MIN ($MINTOL,$P1TOL,$P2TOL,$P3TOL) 1140 IF ($MINTOL .EQ. $P1TOL) THEN $SELON = 1 1150 IF ($MINTOL .EQ. $P2TOL) THEN $SELON = 2 1160 IF ($MINTOL .EQ. $P3TOL) THEN $SELON = 3 1199 C ====================================================== 1200 IF (P1) THEN $P1TOL = TOTAL(P1) ELSE $P1TOL = 1210 IF (P2) THEN $P2TOL = TOTAL(P2) ELSE $P2TOL = 1220 IF (P3) THEN $P3TOL = TOTAL(P3) ELSE $P3TOL = 1230 MAX ($MAXTOL,$P1TOL,$P2TOL,$P3TOL) 1240 IF ($MAXTOL .EQ. $P1TOL) THEN $SELOFF = 1 1250 IF ($MAXTOL .EQ. $P2TOL) THEN $SELOFF = 2 1260 IF ($MAXTOL .EQ. $P3TOL) THEN $SELOFF = 3 1297 C 1298 C *** START PULSE PROCESS *** 1299 C 1300 IF(STR) THEN GOTO 1220 1310 GOTO 1400 1320 IF($) THEN ON(P1) 1330 IF($) THEN ON(P2) 1340 IF($) THEN ON(P3) 1390 GOTO 1400 1397 C 1398 C *** STOP PULSE PROCESS *** 1399 C 1400 IF(STP) THEN GOTO 1420 1410 GOTO 1500 1420 IF($) THEN OFF(P1) 1430 IF($) THEN OFF(P2) 1440 IF($) THEN OFF(P3) 1500 IF(STR .EQ. OPER) THEN RELEAS(OPER,STR)1510 IF(STP .EQ. OPER) THEN RELEAS(OPER,STP)1520 OFF(STR,STP) 1, 程序設(shè)計(jì)首重羅輯思考及程序條件發(fā)展,搭配數(shù)據(jù)庫各監(jiān)控點(diǎn)之功能及變量之應(yīng)用.2, 一個(gè)完整的PPCL程序除了功能正確無誤外亦應(yīng)考慮到其它異常狀況處置.3, COV , 變量 , 跨節(jié)點(diǎn)傳值在P2網(wǎng)絡(luò)上屬極重要之一環(huán),應(yīng)必免不適當(dāng)數(shù)值傳遞于結(jié)點(diǎn)之間而降低網(wǎng)絡(luò)之傳輸效率及穩(wěn)定性.4, 程序設(shè)計(jì)人員應(yīng)該確實(shí)掌握其程序中各項(xiàng)監(jiān)控點(diǎn),變量于各執(zhí)行行號(hào)之?dāng)?shù)值及狀況˙1, 題目: 操作人員輸入控制: LAO(V)監(jiān)控點(diǎn)PT1~PT5由操作人員COMMAND 輸入數(shù)值. 控制條件: 1