Re: [foxboro] FBM 230 RS-485 communication to Allen Bradley
- From: Brian Long <blong@xxxxxxx>
- To: "foxboro@xxxxxxxxxxxxx" <foxboro@xxxxxxxxxxxxx>
- Date: Fri, 28 Feb 2014 21:49:36 -0600
Probably need to add more time to timeout, see manual for details.
Sorry to not be more help, I'm not close to any docs.
Brian
Sent from my iPad
On Feb 28, 2014, at 9:24 PM, Sandy AH <aloy_sah@xxxxxxxxx> wrote:
> Hi there,
> I am interfacing FBM230 with PLC Allen Bradley over RS485.
> The modbus data is Holding Register Floating Point (4 bytes) with all modbus
> configuration as per the configuration in PLC. Everything is showing healthy
> on communication and I can get the data in RIN and BIN blocks.
> But after sometimes (let's say few hours) the communication fails (it shows
> the device fail) and not automatically back to normal. I have to disable
> communication and then enable communication in SMDH. Once I did this, the
> communication immediately back to normal.�
> For example if I disconnect the cable (RS485 cable) and connect it back, the
> communication to PLC AB does not back to normal automatically, it requires me
> to disable/enable communication in SMDH first in order to make the
> communication back healthy.
> Is there anyone can help on this since it is quite disturbing that I have to
> disable / enable the communication every time there is a break in the
> communication.
>
> Regards,
> Sandy - QAFAC
>
>
> _______________________________________________________________________
> This mailing list is neither sponsored nor endorsed by Invensys Process
> Systems (formerly The Foxboro Company). Use the info you obtain here at
> your own risks. Read http://www.thecassandraproject.org/disclaimer.html
>
> foxboro mailing list: //www.freelists.org/list/foxboro
> to subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join
> to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave
>
_______________________________________________________________________
This mailing list is neither sponsored nor endorsed by Invensys Process
Systems (formerly The Foxboro Company). Use the info you obtain here at
your own risks. Read http://www.thecassandraproject.org/disclaimer.html
foxboro mailing list: //www.freelists.org/list/foxboro
to subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join
to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave
Other related posts:
