Need to control waterbath temp using labview via RS232

HI,
I am new to labview. I have labview 6.1. I need to control a thermo RTE7 water bath temp. controler using labview.
The water bath has to be connected to computer via RS232 port and the commands have to be given via binary values.
The users manual for the bath has "hex" bytes that are to be converted
to binary values to be passed to bath. If anyone has done this before
or anyone can help me on this please let me know. Thanks,

Use simply the recommandations given in the RTE manual. You don't have to convert to binary : that's something done by the hardware.
For instance, to send the temperature setpoint to the controler, you have to send a byte string such as
CA 00 01 F0 02 01 2C DD, where CA 00 01 is a header specific to the type of serial link you are using,
F0 is the set temperature command,
02 is the number of bytes expressing the temperature that you are about to send
01 0C is the temperature in tenths of degree (here : 30°C = 300 tenth = 010C$
DD is a check sum byte.
The corresponding labVIEW program is as follow :
Of course, do not forget to initialize the serial port before writing the string !
Message Edité par chilly charly le 10-21-2005 06:21 AM
Chilly Charly (aka CC)
E-List Master - Kudos glutton - Press the yellow button on the left...
Attachments:
Water bath.png ‏4 KB
Water bath.vi ‏28 KB

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