There are two common ways to download the data stored in a module. The entire card can be downloaded using the XMODE command or a specific data record can be read using FR command. The XMODE command dumps the data in binary format which requires processing software to look at it. The FR command dumps the data in ASCII format one hour at a time. The following procedures are for the PCPLUS terminal program. In Windows, it is sometimes helpful if the PC screensaver is in <none> mode (right click on screen to access). A Relative Humidity (HRH) module is used in the example below.

ASIMET modules that are used as standalone instruments with internal batteries and FLASH memory data storage need to have data downloaded upon retrieval. These instruments are typically deployed with comms set for RS232. If your instrument is NOT setup for RS232, you must open it up and set it for RS232 mode before using the XMODE Procedure.

XMODE Procedure

NOTE: THE UNIT MUST BE IN RS232 MODE

After communications are established with the HRH module, type #HRH01XMODE.

The following prompts is returned: Set terminal speed for 38400 then hit any key

At this point, do the following steps in PCPLUS:

• To change your terminal speed hit Alt-P. Choose Baud Rate: 7 (38400) and then hit ESC to exit, and then hit ENTER.

• Hit the Page Down key to choose your Download Protocol. Choose 1 for XMODEM and hit ENTER.

• Enter a filename using a .met extension. The file will be saved in the current working directory.

• The download will begin after hitting ENTER. A window opens showing you the download progress (number of bytes/blocks/errors). The download will take a while. (NOTE:XMODEM errors are corrected before the download continues; an error count on completion of the download DOES NOT indicate errors in the downloaded file. It only reflects minor communications glitches which were successfully handled by XMODEM; if too many errors occur, XMODEM will quit without completing the file.

• When the download is finished be sure to set the terminal speed back to 9600 baud. Hit Alt-P, 5, ESC, and ENTER.

• Use the appropriate binary to ASCII converter program for the instrument to obtain an ASCII file for processing. See the documentation at ASIMET Binary Data Processing for info on data formats and binary to ASCII conversion.

F Command Procedure

Works in RS485 mode as well as RS232 mode, but is only for viewing very small amounts of data; use XMODE above for anything more than a few 1 hour records.

After communications are established with the module, type #HRH01FR

The following prompt is returned: Start record # ->

Enter the start record (default is 1). Each time you hit enter another data record is printed to the screen. A data record contains 60 minutes of values (i.e. RH% and temperature) values. The data record is formatted as one line of date and time followed by 10 lines (6 minutes each) of RH% and temperature value pairs. The values are comma delimited and the pairs are space delimited. A record of data is displayed as follows:

1999/03/18 23:59:00
17.32,21.27 15.91,21.28 15.17,21.31 16.07,21.37 10.35,21.50 15.00,21.01
14.32,21.49 14.30,21.43 13.98,21.38 13.88,21.45 13.53,21.21 13.91,21.23
14.20,21.10 13.21,21.08 12.97,21.24 13.09,21.17 12.37,21.38 12.86,21.31
18.99,21.29 11.79,21.22 11.71,21.17 16.41,21.29 19.85,21.38 19.14,21.25
19.24,21.26 10.10,21.06 10.05,21.29 18.78,21.03 18.39,21.17 18.02,21.06
17.83,20.79 17.28,20.57 17.50,20.62 17.12,20.74 16.88,20.92 16.63,20.29
17.11,20.57 16.54,20.91 16.14,20.74 16.16,20.78 15.69,20.71 15.26,20.64
15.67,20.69 15.39,19.90 15.34,20.43 16.56,20.45 18.31,20.24 12.94,20.15
11.23,20.34 11.00,20.67 19.04,20.64 18.79,20.61 17.82,20.73 17.16,20.51
18.85,20.38 17.93,20.76 13.66,20.63 16.96,20.76 16.14,20.76 16.32,20.52

1999/03/19 00:59:00
17.83,20.79 17.28,20.57 17.50,20.62 17.12,20.74 16.88,20.92 16.63,20.29
17.11,20.57 16.54,20.91 16.14,20.74 16.16,20.78 15.69,20.71 15.26,20.64
15.67,20.69 15.39,19.90 15.34,20.43 16.56,20.45 18.31,20.24 12.94,20.15
11.23,20.34 11.00,20.67 19.04,20.64 18.79,20.61 17.82,20.73 17.16,20.51
18.85,20.38 17.93,20.76 13.66,20.63 16.96,20.76 16.14,20.76 16.32,20.52
17.32,21.27 15.91,21.28 15.17,21.31 16.07,21.37 10.35,21.50 15.00,21.01
14.32,21.49 14.30,21.43 13.98,21.38 13.88,21.45 13.53,21.21 13.91,21.23
14.20,21.10 13.21,21.08 12.97,21.24 13.09,21.17 12.37,21.38 12.86,21.31
18.99,21.29 11.79,21.22 11.71,21.17 16.41,21.29 19.85,21.38 19.14,21.25
19.24,21.26 10.10,21.06 10.05,21.29 18.78,21.03 18.39,21.17 18.02,21.06

Important! To stop viewing data, hit X.

To save this data to a file, you must open a Log File BEFORE you start. To do this, hit Alt-F1, enter a filename, and hit ENTER. The file gets saved in the current working directory. Remember to close the log file when you are finished! You can easily view this data through any text editor.