Re: COMM failed status of Fire Alarm 8000 series

["albertleng" <albertleng@xxxxxxxxx>]

Hi Friends,

I think i have found a way to solve it.

Since the Fire Alarm cant receive from my PC (it only sends to my PC),
i use Tx of RS232 of my PC side and short it to pin 8, CTS. Then, i use
a timer to trigger MSComm1.Output in which Tx will send something to
CTS.

If we disconnect the connector to the PC, the Tx and CTS are not
shorted anymore and there's no more sending from Tx to CTS.

Albert


A.J. wrote:
> What about checking the DTR/DSR or XON/XOFF status ?
>
>
>
> "albertleng" <albertleng@xxxxxxxxx> wrote in message
> news:1157724029.690052.194260@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> > Hi.
> >
> > I'm working on a VB programming project (residing in PC) which needs to
> > receive data from a Fire Alarm 8000 series via RS232 and all the data
> > received need to be converted to MODBUS addresses.