Operator's manual (PDF) - McElroy Manufacturing, Inc.

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Maintenance and TroubleshootingUnit Does Not RespondThere is a reset plug labeled (RESET DC900)furnished with the unit. If the unit does not respond topressing any keys (appears to be ’locked up’) insertthe reset plug in the 15-pin connector on the bottom ofthe unit for about 1 second and then remove it. Theunit will perform a reset and after a few seconds willbecome ready at the start of the program.Performing a reset will return the password, pressuretransducer calibration, and temperature probe offset totheir default values. You will have to recalibrate thetransducer and input the temperature probe offset.NOTICE: Performing a reset will abort datalogging anddata will be lost for the joint currently in progress. Usethis method only in case of an apparent " lock up" ofthe unit.PH01177-6-9-97TX01383-5-20-97Diagnostic Test ScreenThe diagnostic test screen can be accessed any timeexcept when displaying the DRAG measurementscreen 160, or TEMPERATURE measurement screen170, or when the unit is logging joint data, screen 200or 202. This screen is accessed by pressing the F1function key. The displayed information is useful indiagnosing problems that may arise in the computingunit, temperature probe, or pressure probe.Displayed information is:Transducer pressure reading in psi, bars and Kg/cm 2 .(Final) = actual pressure transducer output voltageminus offset voltage. (Input minus offset).(Offset) = The initial 0 psi offset of the pressuretransducer.(Input) = the actual voltage output of the pressuretransducer.[ Raw temperature, filtered temperature 0 F ] : adjustedfinal temperature, 0 F- 0 C = The actual temperatureprobe reading.The initialization character string (MICROFLEXPC9000) [Program version number]If you have problems with the unit this information willbe useful in diagnosing the trouble when you contactyour distributor for assistance.PH01190-6-11-97TX01384-5-20-976 – 4
Maintenance and TroubleshootingReprogramming UnitThis section gives step by step instructions on loadingnew software and setting up a DataLogger.1. Turn on the DataLogger. (If the battery is low, youwill need to plug in the AC adapter for the unit tocome on).2. Use the reset plug (labeled RESET DC900) toreset the DataLogger.This is done by plugging the reset plug into the 15-pinsocket of the DataLogger momentarily and thenunplugging it.3. At the sound of the first beep after reset, press immediately.This will bring up the "COM" program of theDataLogger. You may watch the power-up screenclosely so that you can get your hand ready to press when the RAM disk byte count approaches 640K.NOTICE: Once in a while the DataLogger might turnoff its screen when the setup is lost. Simply press the key to bring back the screen. Also make surethat the AC adapter is plugged in at all times until thesoftware downloading is completed.4. The second line on the DataLogger should read"COM1:38400 BAUDS". If not, press to set thebaud rate, and press to set the port to COM1. Inall the menu screens, you need to press to getback to the top screen that says "LOGON->" on thesecond line.5. Now go to your PC. Insert the DataLoggerProgram Diskette into floppy drive A (or B) of your PCand go to a DOS prompt. At the DOS prompt,type A: (or B:) to log on to your PC’s floppy drive.6. At the A:\> prompt, change directory to\DATALOG on your PC using the command: cd datalogThe last line on your screen should look likeA:\DATALOG>7. Type "..\COM" on your PC:A:\DATALOG>..\COMThis starts the communication program between thePC and the DataLogger.Notice the display on the PC is similar to that on theDataLogger.8. Make sure that the PC screen reads"COM1:38400 BAUDS" on the second line if you areusing COM1, or "COM2:38400 BAUDS" if you areusing COM2.Setting up the COM port and baud rate is similar tothe procedure described above (4).9. Locate the special communication cable (15-pin to25-pin), and plug the 25-pin end labeled "IBM" to thePC’s serial port. The "PC9000" end goes to theDataLogger’s 15-pin socket. Also use the 25 pin to 9pin adapter cable if the PC has a 9 pin connection.10. Press on the PC keyboard to activate"Master mode" on the PC. This automatically puts theDataLogger in the slave mode.11. Press to send files to the DataLogger. Typein *.* for "FILE TO SEND" and press . For"DESTINATION", press .NOTICE: When a file is transferring, the PC screenwill not update until a file is completely transmitted.The file DATALOG.EXE takes about 3 to 4 minutes totransfer. The entire file transfer should take about 5minutes. If you suspect that a problem has occurred,you may press to quit. The program will thenprompt you to press to confirm.The COM program may lock up especially if you try tomulti-task it under Windows. To avoid unnecessarylock ups, run the COM program in a full DOS screenunder Windows.12. If the files transferred successfully, the PC willreturn to the file utility screen, where "1" is SEND.Press to end. In the top screen where ’1’ isMODEM/DIAL, press to exit.13. The DataLogger screen should read "C>CTTYCOM1". Disconnect the communication cable fromthe DataLogger. Use the RESET plug to reset theDataLogger, as described above (2). The DataLoggershould be up and running after the power-up sequence.6 – 5TX01385-5-20-97
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