CN8202 Serial communication

[zacharia01]

Hi,

I have been trying to get the readings from a Omega 8202 temperature controller into my PC using LabVIEW. So far no success. I am using a driver downloaded from third party driver repository available at NI.com. In the 8202 Manual, they describe the connections using a DB25 pin, but I am using a crossover cable because my PC is with DB9 pin. So Interchanged the connections to pins 2 and 3. The ground is connected to 7. The bytes at the serial port is zero, no matter how I try. I am assuming that serial port configuration is usual, 9600, N, 8, 1, etc., because no where in the Omega manual I could locate this information. Anybody has a clue what I am doing wrong? If anybody who has some experience with CN8202 share their knowhow, I deeply appreciate. I am still a Newbie in Serial port communication. 

Thanks in Advance,

Zacj

[AnalogKid2DigitalMan]

1. Verify your 8200 model number includes the -C2 option (RS-232)

2. On 9 pin port, pin 5 is ground, not pin 7.

3. Here is the options manual that specs out the RS-232 setup.

http://www.omega.com/Manuals/manualpdf/M3396.pdf

Hope this helps. You can always try using Hyperterminal first with basic commands before tring it out in LabVIEW.

-AK2DM

[zacharia01]

Thanks AnalogKid2DigitalMan,

This omega has C2 option. The problem was that, the address of the controller was set to 7 by default, while I used 1 in LabVIEW.

Now it working.

Thanks a lot and have a good day.

Zach