D M D - 4 8 0 - S 2 S E R I E S A C P O W E R E D B R I D G E S E N S O R - R S 2 3 2 I N T E R F A C E
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6.
OPTION 5 [SELECT UNITS TO MONITOR]:
THE LAST OPTION SELECTS THE ADDRESS OF THE MODULES TO
BE MONITORED IN THE ORDER IN WHICH THEY ARE TO BE MONITORED.
ADDRESSES FROM 0 TO 63 MAY BE SELECTED.
THE DEFAULT ADDRESS IS “1”.
E.
OPERATION MENU
THE “OPERATION MENU”, ALLOWS 4 USER CHOICES.
1.
OPTION 0 [QUIT]:
ALLOWS THE USER TO QUIT THE PROGRAM.
2.
OPTION 1 [SETUP THE UNITS]:
EXECUTES THE “SETUP MENU”, WHICH ALLOWS THE USER TO
SET ADDRESSES TO INTERROGATE, MEASUREMENT RATE, ETC.
REGARDLESS OF WHETHER THE “TEST MODE” OR “OPERATION
MODE”
IS SELECTED, CERTAIN PARAMETERS MUST ALWAYS BE ENTERED IN
THE SETUP UNITS OPTION IN ORDER FOR YOUR MEASUREMENT
SYSTEM TO OPERATE PROPERLY.
(REFER TO SECTION D FOR SETUP MENU DESCRIPTION)
3.
OPTION 2 [START OPERATE MODE]:
WILL EXECUTE THE OPERATE MODE IF THE DMD-480-S2 SERIES HAS
BEEN SET FOR MODE 0 (SW7 AND SW8 “ON”).
4.
OPTION 3 [START TEST MODE]:
WILL EXECUTE THE TEST MODE IF THE DMD-480-S2 SERIES HAS BEEN
SET FOR MODE 1 OR 3.
PRIOR TO ENTERING THE OPERATE MODE, IT WILL BE NECESSARY TO HAVE THE
CORRECT UNIT ADDRESSED, AND IN MOST CASES IT WILL BE NECESSARY TO
ENTER THE SETUP MENU AND SET THE SCALING EQUATION, DATA
DESTINATION, AND DATA COLLECTION METHOD.
IT IS RECOMMENDED THAT THE USER OPERATE THE UNIT IN TEST MODE 3 PRIOR
TO THE OPERATE MODE TO ENSURE THAT THE UNIT IS COMMUNICATING
PROPERLY. THE USER CANNOT ADDRESS MULTIPLE UNITS IN THE TEST MODE,
THEREFORE EACH UNIT MUST BE TESTED INDIVIDUALLY.
F.
SETTING THE SCALING EQUATION
THE SCALING EQUATION IS SET BY WRITING THE EQUATION FOR THE TWO
CONDITIONS OF ZERO AND SPAN, AND THEN SOLVING FOR THE CONSTANTS.
THE DMD-480-S2 HAS AN OUTPUT OF APPROXIMATELY 41,750 COUNTS FULL
SCALE. IF THE MODULE WERE TO BE USED AS A VOLTAGE OUTPUT UNIT AND
THE SPAN WERE TO BE 30 mV, THEN THE FOLLOWING CALCULATION WOULD BE
MADE.
