Datalogger and RS232 Interface

Transcription

1 Datalogger and RS232 Interface RS232 Wiring Hardware 2 RS232 Code.. 3 Hardware Requirements and Setup 4 Software Requirements and Setup.. 5 Communicating Operation. 8 Run the Software Record.. 10 Download Data Convert Apply for Excel 14 Apply for Graph 17 Sampling Time Alarm Function.19 1

2 RS232 Wiring Hardware PC Interface Cable Meter side of PC Interface Cable The RS-232 phono plug side of the PC Interface Cable connects to the meter s RS-232 phono jack. Refer to the diagram below for wiring information. RX GND TX Computer s Serial Port side of Interface Cable The RS-232 DB-9 side of the PC Interface Cable connects to the PC s COM port. Refer to the diagram below for wiring information. Note that a SERIAL to USB Adapter may be used. RS232 Settings 28800, N, 8, 1 2

3 RS232 Protocol 02 Flag ppm H ppm L RH H RH L Cel H Cel L 03 02:Starting Byte Flag:(Reserved) ppm(h L): 0~6000 RH(H L): 0~100 Celsius(H L): -20.0~ :LCD Ending Byte Calibration Used 0 N2_H N2_L AIR_H AIR_L FF 0:Marking Byte N2:SENSER N2 Value AIR:SENSER CO2 Value FF:Marking Byte Baud Rate:28800 ( 15 bytes data / 0.25 seconds) Datalogging:(Maximum: 99 sets ) Head : AA 55 AA 55 AA 55 AA 55 AA 55 AA +Total Set+ Last Add+Any command Records of 1 st set+time+intv+ Any command Data Any command Records of 2 nd set+time+intv+ Any command Data Any command After 256 bytes data has been downloaded, the Meter wait for Any command from PC..The Last Recorded data wait for Any command from PC 3

4 Hardware Requirements and Setup PC HardWare Requirements : HDD, CD Rom, 486 PC or above, with available COM port EGA or higher monitor 4M bytes or more memory size PC HardWare Setup : 1) Switch off all power related to the PC 2) Connect the DB9 (female) end of the supplied RS-232 cable to available COM port 3) Switch on all related power 4) Connect the phono plug end of the RS232 cable to the meter 4

5 Software Requirements and Setup 1) Start up windows 95 / 98 / 2000 / XP operating system 2) Close all other applications 3) Insert disk in CD drive Wait for Autorun to start and follow on-scree instructions (If autorun does not sart, click on Start then Run. Type the drive letter and : \Disk1\Setup.exe and click OK.) 1). Setup program will run automatically. 2). Click Next> button 5

6 3). a. Click Next> to use the default folder or b. Click Browse to select a different folder 4). Click Next> button 6

7 Setup is complete. 7

8 Run the software Communicating Operation 1. Click "Start" form Start menu then move to "All Programs" (or Programs ) then "HTCO2Meter" and then click the "HTCO2Meter" icon. 8

9 2. Click an available COM port 3. Main software screen Communication Distance RS232: 15 Meters RS485: 1000 Meters (Additional adaptor and cable are required.) 9

10 Record Save to Hard Disk (PC) Click button. The dialog box shown below will appear. Input a file name and then click "Save" to begin saving data to the file just named. Click button to stop recording. 10

11 Save to EEP Rom (CO2 Analyzer) 1. Automatically Record Press the button on the meter for about 3 seconds till symbol shows on the LCD. Press the button (momentarily) to stop recording. 2. Manually Record Press the button once. momentarily to store one reading. The M symbol will flash 11

12 Download Data 1. Download Data from Hard Disk Click button. The Open window, shown below, appears Input the file that was selected earlier and then click the Open button. 12

13 2. Download Data from EEP ROM Click the button on the meter for about 3 seconds ( 3 beeps ). The Data Logger window, shown below, will open. Click on a SET number to view the set s details. For example, in the window above, there are 4 sets from which to choose. The list below is an example of an opened set. 13

14 Data Convert Apply for Excel Open Microsoft Excel, find the file saved in Excel type, for example, test.xls. or find any file already saved in HDD, for example, sample.dat. 14

15 The "Text Import Wizard" then appears. Follow the steps 1 to 3 to complete. Click Next> button Click Next> button 15

16 Click Finish button 16

17 Apply for Graph Open a saved data file in the software program and then click. 17

18 Sampling Time PC Sampling Rate: (rate at which the PC collects readings while connected to the meter) Click on the Menu Bar. In the Input Sampling Time dialog box, input a sampling time and then click "OK" button to confirm. 18

19 Alarm Function (software version V1.6 or later) Click on the Menu Bar. As above, check the willing alarm function and set values then click OK button. 19