User guide

ManualsBrandsBrookfield ManualsMeasuring instrumentsDV-III Rheometer

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A sample program demonstrating the above principles is contained in the following listing. Please

note that this is an example only and does not include advanced programming techniques or error

trapping.

1000

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1005

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DV-III External Mode Command Protocol Demonstration |DV-III External Mode Command Protocol Demonstration |

DV-III External Mode Command Protocol Demonstration |

1010

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1015

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Written by Greg Krysko |Written by Greg Krysko |

Written by Greg Krysko |

1020

‘+——————————————————————————+‘+——————————————————————————+

‘+——————————————————————————+

1025 ‘

1030

CLSCLS

CLS

1035

PRINT SPCPRINT SPC

PRINT SPC(26) “Brookfield Engineering Labs”

1040

PRINT SPCPRINT SPC

PRINT SPC(20) “DV-III External Mode Demonstration Program”

1045

PRINT SPCPRINT SPC

1050

PRINTPRINT

1055

PRINTPRINT

PRINT “This program is intended to demonstrate the use of the RS-232 command “

1060

PRINTPRINT

PRINT “set employed by the Brookfield Engineering Labs Model DV-III Rheometer “

1065

PRINTPRINT

PRINT “in its External mode. This program and/or any of the commands used “

1070

PRINTPRINT

PRINT “within may be freely used in your own applications.”

1075

PRINTPRINT

1080

PRINTPRINT

PRINT “Press any key to continue...”

1085

GOSUBGOSUB

GOSUB 1490 ‘ Wait for a keypress

1090

CLSCLS

CLS

1095

GOSUBGOSUB

GOSUB 1655 ‘ Initialize variables

1100

OPEN OPEN

OPEN “COM1:9600,N,8,1,CS,DS,CD”

ASAS

A S #1 ‘ Open com port #1

1105

GOSUBGOSUB

GOSUB 1695 ‘ Reset the DV-III

1110

PRINTPRINT

PRINT “Please remove the spindle and press any key to begin the Auto-Zero process.”

1115

GOSUBGOSUB

GOSUB 1490 ‘ Wait for a keypress

1120

PRINTPRINT

PRINT “Auto-Zeroing...”

1125

GOSUBGOSUB

GOSUB 1760 ‘ Send the zero command

1130

BEEPBEEP

BEEP

1135

PRINTPRINT

PRINT “Auto-Zero complete. Replace spindle then press any key to continue.”

1140

GOSUBGOSUB

GOSUB 1490 ‘ Wait for a keypress

1145

CLSCLS

CLS

1150

PRINTPRINT

PRINT “Enter model multiplier (See Table A.2 of Appendix A in the DV-III manual) “

1155

INPUTINPUT

INPUT “Ex: A model LV rheometer has a multiplier of 0.09373 “;MODMULT

1160

PRINTPRINT

PRINT “Enter the spindle SMC (See Table A.1 of Appendix A in the DV-III manual) “

1165

INPUTINPUT

INPUT “Ex: An SC4-31 spindle has an SMC of 32 “;SMC

1170

PRINTPRINT

PRINT “Enter the spindle SRC (See Table A.1 of Appendix A in the DV-III manual) “

1175

INPUTINPUT

INPUT “Ex: An SC4-31 spindle has an SRC of 0.34 “;SRC

1180

PRINTPRINT

1185

PRINTPRINT

PRINT “The DV-III will begin running at 10 RPM and will increment”

1190

PRINTPRINT

PRINT “its speed by 10 RPM every 10 seconds. At the end of each”

1195

PRINTPRINT

PRINT “10 second interval, a data point will be taken and displayed”

1200

PRINTPRINT

PRINT “on the screen. This will continue until a data point is taken”

1205

PRINTPRINT

PRINT “at 150 RPM at which point the DV-III will return to 0 RPM.”

1210

PRINTPRINT

1215

PRINTPRINT

PRINT “Press any key to continue...”

1220

GOSUBGOSUB

GOSUB 1490 ‘ Wait for a keypress

1225

CLSCLS

CLS

1230

PRINT SPCPRINT SPC

PRINT SPC(31) “Sample DV-III Data”

1235

PRINT SPCPRINT SPC

PRINT SPC(31) “—————————”

1240

PRINTPRINT

1245

WHILEWHILE

WHILE RPM <= 150 ‘ Repeat until RPM > 150

1250

GOSUBGOSUB

GOSUB 1595 ‘ Convert RPM value to a 4 digit hex string

1255

PRINTPRINT

PRINT “RPM=”;

1260

PRINT USINGPRINT USING

PRINT USING “###.#”;RPM; ‘ Print RPM