Brookfield Temperature Controller, Model 106 - Manual (Page 22)

Brookfield Engineering Labs., Inc. Page 22 Manual No. M/98-206-A0402
APPENDIX A - External Mode Command Protocol Demonstration
1000 ‘
1010 ‘ Programmable Temperature Controller External Mode Command
1020 ‘ Protocol Demonstration Copyright 1991, Brookfield Engineering
1030 ‘ Labs....Written by Greg Krysko
1040 ‘
1050 ‘
1060 CLS
1070 PRINT SPC(26); “Brookfield Engineering Labs”
1080 PRINT SPC(16); “External Mode Demonstration Program”
1090 PRINT SPC(32); “Copyright 1991”
1100 PRINT
1110 PRINT “This program is intended to demonstrate the use of the RS-232”
1120 PRINT “command set employed by the Brookfield Engineering Labs Model”
1130 PRINT “Programmable Temperature Controllers in their External mode.”
1140 PRINT “This program and/or any of the commands used within may be freely”
1150 PRINT “used in your own applications.”
1160 PRINT
1170 PRINT “Press any key to continue...”
1180 GOSUB 1670
‘ Wait for a keypress
1190 GOSUB 1760 ‘ Initialize variables
1200 OPEN “COM1:9600,N,8,1,CS,DS,CD” FOR RANDOM AS #1 ‘ Open com port #1
1210 CLS
1220 PRINT “The Controller will run a temperature ramp from 100
° C to 200 ° C”
1230 PRINT “in 25 ° C increments. When the current temperature is within”
1240 PRINT “one half a degree of the setpoint, there will be a 10 minute”
1250 PRINT “delay before ramping to the next temperature to allow the”
1260 PRINT “temperature to settle. When the ramp is complete, the”
1270 PRINT “controller will be placed in the Standby mode and allow the”
1280 PRINT “Thermosel to return to ambient temperature.”
1290 PRINT
1300 PRINT “Press any key to continue...”
1310 GOSUB 1670
‘ Wait for a keypress
1320 CLS
1330 PRINT “Beginning temperature ramp...”
1340 PRINT
1350 WHILE SETPOINT <= 200
‘ Repeat until temp = 200
1360 LOCATE CURSY, 1
1370 PRINT “Temperature Setpoint #”;
1380 PRINT USING “#”; POINTNUM;
1390 PRINT “ = “;
1400 PRINT USING “###.#”; SETPOINT;
‘ Print Setpoint Temperature
1410 PRINT SPC(3);
1420 HTCMD$ = “RS” + RIGHT$(STR$(FIX(SETPOINT * 10)), 4) + “C” ‘ Form command
1430 GOSUB 1890
‘ Send command to Controller
1440 GOSUB 1970 ‘ Wait for Controller to reply
1450 GOSUB 2090 ‘ Parse response
1460 ‘ Send a run mode command if not already in run mode
1470 IF INRUN = 0 THEN INRUN = 1:HTCMD$ = “RA1”:GOSUB 1890:GOSUB 1970
1480 WHILE ((SETPOINT - .5) > TEMPERATURE) OR ((SETPOINT + .5) < TEMPERATURE)
1490 GOSUB 2480
1500 WEND
1510 GOSUB 2290
1520 SETPOINT = SETPOINT + 25
‘ Increment setpoint by 25
1530 CURSY = CURSY + 2
1540 POINTNUM = POINTNUM + 1
1550 WEND
‘ End WHILE from line 1245
1560 HTCMD$ = “RA2” ‘ Set Controller to Stby mode
1570 GOSUB 1890 ‘ Send command to HT-104
1580 PRINT