Rockwell-automation Current Input Module Instrukcja Użytkownika Pobierz pdf (Strona 37)

4Ć19

990 !

1000 ! ******************** INITIALIZATION **********************

1010 !

1020 ! Configure the first three channels using the data &

! statements at 8000.

1030 !

1100 FOR CHANNEL%=0TO2

1110 ! Reset the configuration register

1120 CNF_COMMAND% = 0000H

1130 ! Wait for the config complete flag to be reset

1140 IF CNF_COMP@ = FALSE THEN GOTO 1180

1150 DELAY 10 TICKS

1160 GOTO 1140

1170 ! Specify the channel to be configured

1180 CNF_CHAN_NUM% = CHANNEL%

1190 ! Specify the max scaling, min scaling, highĆhigh, high, &

! low, lowĆlow alarm values

1200 READ CNF_MAX%, CNF_MIN%, CNF_AVE_SAMPLE%, CNF_HH_ALARM%, &

ăăCNF_H_ALARM%, CNF_L_ALARM%, CNF_LL_ALARM%

1210 ! Send the WRITE configuration command that specifies &

! retaining the old value for the out of range mode and &

! enabling cycle averaging, and disabling square root extraction &

1230 CNF_COMMAND% = 3000H

1240 ! Wait for the config complete flag to be set

1250 IF CNF_COMP@ = TRUE THEN GOTO 1290

1260 DELAY 10 TICKS

1270 GOTO 1250

1280 ! Check for an error configuring the channel

1290 IF CNF_ERROR@ = TRUE THEN SHUTDOWN@ = TRUE

1300 NEXT CHANNEL%

8000 !

8010 ! ăMax ĂăMin Run High High Low Low

8020 ! Scaling Scaling Aver High Low

8030 DATA ă2000, -100, 20, 1800, 1600, ă400, ăă0

8040 DATA ă3000, ăăă0, 20, 2500, 2000, ă500, ă250

8050 DATA 10000, ăăă0, 20, 9000, 7500, 2500, 1000

8060 !

9000 !

9010 ! *********************** MAIN LOOP **********************

9990 !

9991 ! If any channels are out of range, then set shutdown flag

9992 !

10000 IF OUT_OF_RANGE% <> 0 THEN SHUTDOWN@ = TRUE

11000 !

11010 ! If tank or startup process or operation process has &

! high or low alarm, set warning flag

11030 !

11040 IF TANK_H_ALARM@ OR START_H_ALARM@ OR OP_H_ALARM@ OR &

TANK_L_ALARM@ OR START_L_ALARM@ OR OP_L_ALARM@ THEN & WARNING@ = TRUE

12000 !

12010 ! If tank or startup process or operation process has a &

! highĆhigh or lowĆlow alarm, set the shutdown flag

12030 !

12040 ĂIF TANK_HH_ALARM@ OR START_HH_ALARM@ OR OP_HH_ALARM@ OR &

TANK_LL_ALARM@ OR START_LL_ALARM@ OR OP_LL_ALARM@ THEN &

SHUTDOWN@ = TRUE

13010 !

13020 ! Wait one second then check again

13030 !

13040 DELAY 1 SECONDS

13050 GOTO 10000

Figure 4.12 ĆSample DCS 5000/AutoMax Current Input Application Task

(Continued)

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