Re: [foxboro] Integrator 30 for Modbus quirk
- From: Kevin Fitzgerrell <fitzgerrell@xxxxxxxxx>
- To: foxboro@xxxxxxxxxxxxx
- Date: Mon, 9 Feb 2009 12:34:19 +0900
Alex,
This may not be what Shaun means, but at my site we don't have ethernet to
every Modbus or Allen Bradley PLC in our network, nor do we want to.
For instance, with Allen Bradley, I have an ethernet gateway some of my
controlnet and/or DH+ networks. I have one IP address for my ethernet
gateway, it would be very convenient be able to address different devices on
this network even though the IP address (gateway address) is the same for
all. Allen Bradley software and hardware has no problem with this concept.
Regards,
Kevin FitzGerrell
On Mon, Feb 9, 2009 at 12:22 PM, Johnson, Alex P (IPS) <
alex.johnson@xxxxxxxxxxxxxxxx> wrote:
> Re: FBM 232/233 (ethernet) are designed not to work in multidrop
> situations Even though they use IP address and device address in their
> configuration they insist on only one device per IP address.
>
> Shaun, would you elaborate on this? I don't understand what you are
> saying.
>
> The Ethernet version of FDSI FBM supports up to 64 devices on an
> Ethernet network; your mileage may vary based on protocol. Each device
> does require its own IP address which is the norm on an IP network.
>
>
>
> Regards,
>
> Alex Johnson
> Invensys Process Systems
> 10900 Equity Drive
> Houston, TX 77041
> 713 329 8472 (desk)
> 713 329 1600 (operator)
> 713 329 1944 (SSC Fax)
> 713 329 1700 (Central Fax)
> alex.johnson@xxxxxxxxxxxxxxxx
>
> -----Original Message-----
> From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx]
> On Behalf Of Goldie, Shaun S
> Sent: Sunday, February 08, 2009 4:40 PM
> To: foxboro@xxxxxxxxxxxxx
> Subject: Re: [foxboro] Integrator 30 for Modbus quirk
>
> Hi Virgil
> FBM 232/233 (ethernet) are designed not to work in multidrop situations
> Even though they use IP address and device address in their
> configuration they insist on only one device per IP address.
>
> In my situation I wanted to talk RS485 to Durag flame controllers and
> had to install an IP/Serial gateway per Durag
> Shaun
>
>
>
>
>
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