Re: [foxboro] Networking Issues
- From: "Brown, Stanley" <stan.brown@xxxxxxxxxxxxxxxxx>
- To: "<foxboro@xxxxxxxxxxxxx>" <foxboro@xxxxxxxxxxxxx>
- Date: Sun, 15 Sep 2013 23:20:28 +0000
Wireshark and a good SNMP tool will help diagnose the degradation.
Sent from my iPad
On Sep 15, 2013, at 18:07, "Richard Peck" <lovetomix@xxxxxxxxx> wrote:
> Thank you all, I will look at the trouble shooting hopefully today. I
> should have mentioned that the install is ~18months. We had comma drops a
> few times, then it ran for almost 12 months. Then in the last week ~6
> failures. Hence why I've been more focused on a component failure. There
> have been no load or system changes
> On Sunday, September 15, 2013, cleddon wrote:
>
>> In the large number of Ethernet FDSI's I have worked on the switches have
>> never been the issue. There is usually something wrong with the
>> configuration parameters in the FDSI Configuration file or the IA
>> programming (PAKINs can be sneaky if misaddressed). You need to get wire
>> shark and a hub or a switch capable or port mirroring to view the Ethernet
>> packets to figure out what is happening between the fbm and the control
>> logix device. I have not had difficulty with the newest FDSI and control
>> Logix but in the past I have found product problems on both the FDSI and
>> the slave devices this way. Any good switch managed or not will do the
>> job, in fact the unmanaged will be less of a hassle in the event you get
>> some previously used switch that has some special configuration already
>> installed. We all remember switch stacking that came with the early
>> Enterasys mesh switches that made life difficult 5 or 6 years ago.
>>
>> Good luck, this may take a little while with the learning curve but it
>> will help a lot in the future with your Mesh troubleshooting as well.
>>
>> Chuck Leddon
>>
>> Sent from my iPhone
>>
>> On Sep 15, 2013, at 9:01 AM, "Brown, Stanley" <
>> stan.brown@xxxxxxxxxxxxxxxxx> wrote:
>>
>>> Can you add a PC to the switch, and use it to run some connection
>> diagnostics with the PLC's and the FDSI? I would start with ping, but the
>> PLC's Suport SNMP, so there are lot of tools to get things like errors,
>> DROPED packets etc.
>>>
>>> In my opinion the availibity of these is one of the big reasons that I
>> am happy finally going to standard protocols.
>>>
>>> Also, you should be able to set up port forwarding, and use Wireshark to
>> really look at the traffic in. Detail, also.
>>>
>>> Sent from my iPad
>>>
>>> On Sep 15, 2013, at 0:36, "Richard Peck" <lovetomix@xxxxxxxxx> wrote:
>>>
>>>> Hi All,
>>>> Thanks for the responses.
>>>>
>>>> The devices are two Allen Bradley PLC's talking ControlLogix over
>> ethernet.
>>>>
>>>> The TO option is for the device not the port - I've thought about
>> extending
>>>> that as my next step in trouble shooting.
>>>>
>>>> However because comms re-establishes after ~30 minutes there must be
>>>> another setting to manage re-connection attempts...
>>>>
>>>> Not sure what the network issue is. Repeated connection and
>> disconnection
>>>> of the Cat5 cable also caused the fault. Could also be a faulty switch.
>>>> We are upgrading all of the switches so this will be rolled out when
>>>> possible and may fix the problem if it is a networking issue. Our
>> current
>>>> status is to disconnect all devices except the DCS and 2 PLC's - so far
>> no
>>>> loss of comms but the problem is intermittent so not really sure how
>>>> successful it is until a week or so passes.
>>>>
>>>> In B0700AH_L there is a section for "Ethernet Hubs and Switches" which
>> says
>>>> that the FDSI was designed and tested for option with devices listed in
>>>> B0700AZ which are all of the MESH switches. It says FMB's may operate
>> with
>>>> similar off teh shelf equipment but Foxboro is not responsible...... {of
>>>> course the switches supplied were not these:)}
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On 15 September 2013 11:27, Joe Riccardi <joe@xxxxxxxxxxxxx> wrote:
>>>>
>>>>> I don't think Foxboro qualifies non-Mesh switches; FBM/PLC. And I
>> remember
>>>>> a time setting in the driver XML configuration parameter; TO = X...
>>>>>
>>>>> Sent from my iPhone
>>>>>
>>>>> On Sep 14, 2013, at 8:22 PM, Richard Peck <lovetomix@xxxxxxxxx> wrote:
>>>>>
>>>>>> Hi All,
>>>>>> I'm experiencing some trouble with connections to a FBM232. There is
>> a
>>>>>> network issue which causes the FBM to go offline. Resetting the FBM
>>>>> works
>>>>>> 100% of the time. Also waiting ~30m works.
>>>>>>
>>>>>> I cannot find any options for adjusting this time period - has anyone
>> got
>>>>>> any experience with that? I would imagine that it is a parameter we
>> can
>>>>>> adjust on the port configuration -> just not found yet....
>>>>>>
>>>>>> However - in my digging I have found that Invensys actually have
>>>>> qualified
>>>>>> ethernet switches. This is annoying as we have just purchased a
>> complete
>>>>>> set of Cisco Switches to replace a bunch of unmanaged hubs that were
>>>>>> originally installed.
>>>>>>
>>>>>> However - on a tangent - as my mind wondered - I thought this:
>>>>>>
>>>>>> "Fox IA is the apple of DCS"
>>>>>>
>>>>>> Apple control all hardware and all software. (dammit Foxboro certify
>>>>> some
>>>>>> standard switches like Cisco and Hirschmann)
>>>>>>
>>>>>> Apple take a long time to change from what they think is best, like
>> one
>>>>>> mouse button, and only Apply people like it... sounds Familiar with
>> our
>>>>>> DCS....
>>>>>>
>>>>>> Any ways, if you've experienced some similar network faults causing an
>>>>>> FBM232 to stop talking please let me know!
>
>
>
>
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