anyone have any luck with one?

it will be used to program a PLC (Cutler-Hammer D50)

i havent found any specs other than it transmits at 9600 baud

im worried that i wont be able to get the voltage that i need in the adapter

3/5/2007 11:06:59 PM

and of course when i called them they didnt have a product nor could they recommend one that is sure to work

3/6/2007 1:13:07 PM

what voltage level do you need to control?

3/6/2007 1:56:31 PM

thats what i dont know

and most of the adapters im seeing are usb powered and i dont know if they are stepping the voltage up or not

there are industrial converters but they are 3x the price of the normal ones

i would like to save some cash if i can

3/6/2007 2:02:26 PM

USB only provides +5V, whereas RS232 uses three power sources +5V, +12V and -12Vand the cheapo convertors don't have a built-in DC/DC convertor to supply the correct voltage.

Some devices don't care about this. my USB to RS232 has no convertor, but it's only used to console into routers and switches. It sounds like your device may require the correct voltages for the interface to operate properly.

So basically, you'll need to check the Specs on whatever convertor you're looking at and make sure that it's supplying the proper voltage.

Or find a PC/laptop with a built-in RS-232 port.

3/6/2007 2:34:21 PM

^ yea that is the problem

i been searching for specs on the voltage requirement but i cant find anything

i may just try a cheapie and if it works cool and if not just return it

3/6/2007 4:55:49 PM