3-1
PC Interface Software
3
3 PC Communication
You can communicate with the CTXL recorder thru RS232 port from a PC.
There are a number of PC commands that allows the user to do the following
functions:
• Get the data (Like Temperature & Relative Humidity) in real time. This is the
same data displayed on the LCD.
• Download the stored chart data from the recorder to the PC. It will save the
data into a data file. It can then be imported into the Excel spread sheet
program for further review and analysis.
• Re-scale the Chart paper for one or both Pens to any range within the input
operating range.
• Reset the Chart scale back to the Factory standard scales.
You can initiate the PC commands from the Hyper terminal or can develop your
own program and incorporate these commands. Here are the steps to work from
the Hyper terminal:
• From Start Programs Accessories Hyper Terminal
• Create a name for your communication
• Set the communication settings as follows (In the Properties Menu):
- COM port (1, 2, 3)
- Baud Rate (9600)
- Data Bits (8)
- Parity (None)
- Stop Bit (1)
- Flow Control (None)
3.1 Get Display Data in Real Time
You can get the data for channels 1 & 2 in real time. It will be the same data
displayed on the LCD. The following two commands perform such functions.
In the Temperature/Humidity Model, the temperature data is multiplied by 10
using the AT command.
Please note that all the PC commands terminate with a Carriage Return. In the
Example section of the following tables, the PC commands are in Bold, and the
response is in regular text.
Command Description
Example
AT
Get display data from Chan 1 (Temperature)
AT;0748
AH
Get display data from Chan 2 (Humidity)
AH;0048
Summary of Contents for CTXL-TRH-W-W9
Page 64: ...6 2 List of Accessories and Charts Papers 6 Notes...
Page 79: ...NOTES 8 13...
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