--- In "tachion0niohcat" <> wrote:
>
> We have a TS7260 board, which has 3 com ports (COM1, COM2, COM3). We have
> successfully used the COM1 port for the console and it works great. We would
> like to talk with some scientific equipment over the other COM ports, however
> this has been unsuccessful.
>
> From the manual it is not clear wether the COM2 and COM3 are RS-232 or wether
> these are RS-485 COM ports. It seems the latter, but I am not 100% sure.
>
> Could someone confirm what type of serial ports these are?
>
> Thank you much!
>
Unless you ordered them as RS485, they are RS232. The COM2 is exactly the same
as COM1, but COM3 is different and cannot run at the same low speeds as COM2.
I can't recall the exact speed, but I needed to run at 300 baud which won't
work on COM3. There may be some flow-control difference between COM3 and COM2
as well.
If you want to log in using COM2 and COM3, check there's a getty entry in
/etc/inittab. If you want to use the ports for your own programs, make sure
there isn't.
I'm pretty sure the device names are /dev/ttyAM0, ttyAM1 and ttyAM2.
Martin
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