Rockwell Automation 2706-F11J_F11JC_F21J_F21JC DL50 INSTALLATION MANUAL - Manual (Page 76)

Chapter 6
Slave Mode Operation / Examples
6–12
DL50 BASIC Alarm Programming Example
This example is for Catalog No. 2706-F11J, -F11JC. Use it as a guide in
creating your own alarm programs. The program determines which alarm(s)
are current and the priority in which they are displayed. The program is
compatible with Microsoft QuickBasic and IBM GW BASIC / BASIC A.
Here is a quick summary of the program:
Lines 5 to 10 initialize the computer communications port for the DL50.
Lines 100 and 120 send the alarm message to the DL50.
Lines 1005 to 2000 define the messages.
Lines 4000 to 6000 determine current alarms and priority.
Lines 9000 to 9200 provide a menu of the available test messages.
Program:
5 REM LINE 10 PREPARES SERIAL PORT ’COM1’ TO SEND MESSAGES TO THE DL50
6 REM WITH BAUD RATE = 9600
10 OPEN “com1:9600,n,8,1,cs,ds,cd”FOR RANDOM AS #1
20 REM THE USER INSERTS
30 OTHER ’INITIALIZATION’ CODE HERE
35 THE PROGRAM DOES A ’GOSUB’ TO LINES 4000-6000 TO EVALUATE IF ANY
36 ALARMS ARE CURRENT AND WHICH WOULD GET PRIORITY TO BE DISPLAYED.
40 GOSUB 4000
97 REM LINE 100 DETERMINES WHICH OTHER ’GOSUB’ LINE WILL DEFINE WHAT NEEDS
98 REM TO BE SENT TO THE DL50
99 REM ALARM= 1 2 3 4 5 6 7 8
100 ON ALARM GOSUB 1005, 1010, 1015, 1020, 1025, 1030, 1035, 2000
120 PRINT #1, M$ ; CHR$ (ADDRESS) ; CHR$(LN) ; CHR$(13)
130 GOTO 35
998 REM LINES 1005-2000 DEFINE THE MESSAGES TO BE SENT TO THE DL50
999 REM SPACING, LINE CHOICE (AND SOMETIMES CHARACTER HEIGHT), ADDRESSING
1000 AND BLINKING CHARACTERS ARE ALL DETERMINED HERE
1001 REM
1002 REM M$, THE ADDRESS, AND LINE NUMBER ARE SENT TO THE DL50 AFTER
1003 REM THE “RETURN”
1004 REM
1005 LN=1: ADDRESS = 1: M$ = “TEST ALARM #1”
1006 RETURN
1010 LN=2: ADDRESS = 1: M$ = “TEST ALARM #2”
1011 RETURN
1015 LN=3: ADDRESS = 1: M$ = “TEST ALARM #3”
1016 RETURN
1020 LN=3O: ADDRESS = 1: M$ = “ THIS IS A TWO-LINE TEST ALARM #4 ”
1021 RETURN
(Program continued on next page)