RS 232 problems

deburca98

Hi all
I have a measuring device linked to a gaugeport and running a wedge software via rs232
I am having a problem with the software, basically the software worked fine for years i switched to a new (ish ) Pc dual core processor.
anyway every so often the following happens.
when taking a measurement sample and populating to excel the leading value is dropped and replaced with a zero, eg 8.76 is returned as 0.76.
this can happen once in every 250 entries or even 1 in every 50
baud rate is 9600 parity 1
i suspect it could be hyperthreading issue or a driver issue.
Another suspect is that FIFO is switched on
Can anyone help

forgot to say i am using a footpedal to enter data
could this be a framing error ?

CreepingDeath

I don't use this software but...

If you're using "WinWedge" they say they provide unlimited technical support. Link

I suspect it's a flow control issue, that it tries sending data too fast and loses some bits in the process.

This looks like it's a step in the right direction... auto hardware flow control setting in the last post here...

Link

So under Windows 7 go to

Start --> Control Panel --> Device Manager

In there expand the item for "Ports (COM & LPT)"
Select the COM port you use, eg. COM1, COM3 etc...
Right click on it and select "Properties".
In the "Port Settings" tab, try setting the "Flow control" option to "hardware" and see if it helps.