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  1. Thread: Open protocols

    by s2sam
    Replies
    37
    Views
    2,219

    Good day Dapper, I have done a fair amount of...

    Good day Dapper,

    I have done a fair amount of Modbus integration as well as debugging the low level Modbus communication protocol (I wrote my own Modbus Stack)... and I am at loss to understand...
  2. Thread: BACnet hackers

    by s2sam
    Replies
    10
    Views
    783

    Good day Dave, I am by no means an expert on...

    Good day Dave,

    I am by no means an expert on Wireshark, but I believe that you had to be physically present at the site and/or on the Network to do the actual sniffing. Also depending upon which...
  3. Thread: BACnet hackers

    by s2sam
    Replies
    10
    Views
    783

    Good day Dave, As Frozenlock suggested, you...

    Good day Dave,

    As Frozenlock suggested, you may wish to install some packet sniffing software (i.e. Wireshark, etc) and go through the packets to see what exactly is going on. Remember it can...
  4. Replies
    19
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    779

    Good day Andrew, Lantronix makes some...

    Good day Andrew,

    Lantronix makes some excellent products and in fact was the manufacturer of JCI's Ethernet N2 Bus Extender (SECVT) used with the NAE 5500 series. Reviews of the SECVT were mixed...
  5. Thread: BACnet hackers

    by s2sam
    Replies
    10
    Views
    783

    Good day FrozenLock, I think you misunderstood...

    Good day FrozenLock,

    I think you misunderstood and/or I presented my comment about mainstream OSes poorly... I Agree with you... My point was that a number of things would have to be present for...
  6. Thread: BACnet hackers

    by s2sam
    Replies
    10
    Views
    783

    Good day Frozenlock, In response to you...

    Good day Frozenlock,

    In response to you comment... Not necessarily. It totally depends upon the hardware and architecture of the controller and if the malware provider has physical access to the...
  7. Good day Andrew, As discussed in your other...

    Good day Andrew,

    As discussed in your other thread, you are going to have the same timing issues with Wireless as you have been experiencing with Ethernet... If you look at this issue at a high...
  8. Replies
    19
    Views
    779

    Good day Andrew, You are most welcome! The...

    Good day Andrew,

    You are most welcome!

    The issues (or charms to some) with Ethernet, etc are well known and creates havoc with protocols that are sensitive to timing. Remember that the N2 bus...
  9. Replies
    19
    Views
    779

    Good day Andrew, Thank you for your...

    Good day Andrew,

    Thank you for your explanation! In fact that is why you are having the issues you are. Using off the shelf Ethernet to RS485 converters with the N2 bus will simply not work...
  10. Replies
    19
    Views
    779

    Good day again Andrew, Just a comment about...

    Good day again Andrew,

    Just a comment about noise... If proper cable is used electrical noise is a non issue simply because RS485 is a differential signaling protocol... in other words the...
  11. Replies
    19
    Views
    779

    Good day Andrew, You are most welcome! Can...

    Good day Andrew,

    You are most welcome!

    Can you explain which MOXA device you are using and how it is integrated into the system? I am unclear how you are integrating this in your network.
    ...
  12. Replies
    19
    Views
    779

    Good day Andrew, There are a number of things...

    Good day Andrew,

    There are a number of things that can cause the issues you are describing:

    a. Less than optimum Cable Used
    JCI provided very little guidance on what cable should be used and...
  13. Replies
    14
    Views
    1,397

    Good day Vaultein, Indeed, the N2 bus is very...

    Good day Vaultein,

    Indeed, the N2 bus is very forgiving and you can use pretty much any wire and have it mostly/sort of work. The saving grace of N2 is the relatively slow communication rate of...
  14. Replies
    14
    Views
    1,397

    Good day Pascone, You are most welcome! As...

    Good day Pascone,

    You are most welcome!

    As for ZB... I have not spent a lot of time on this, as there has been some discussions with JCI and so I was awaiting some direction/info from them...
  15. Replies
    14
    Views
    1,397

    Good day Pascone, Do a search on here about...

    Good day Pascone,

    Do a search on here about RS-485 or a number of my past posts, as this has been discussed a lot of post. That being said, the N2+ and N2- is all that is needed to decode the...
  16. Replies
    3
    Views
    382

    Good day JCIman, NCM's are/were very lenient...

    Good day JCIman,

    NCM's are/were very lenient with regards to timing delays (latencies) from N2 devices... Many older N2 devices (both JCI and third party) violated the maximum N2 response time...
  17. Good day BacMan, No I am not asking for any...

    Good day BacMan,

    No I am not asking for any type of hard data... simply asking you why you think a shield it is necessary. In the application you presented, why do you think the shield helped? ...
  18. Good day again BacMan, Indeed, using the...

    Good day again BacMan,

    Indeed, using the reference and terminators are excellent and in most cases this is what should be done. As for the shield... can you explain what is your reason for doing...
  19. Good day BacMan, Ethernet is being pushed more...

    Good day BacMan,

    Ethernet is being pushed more and more in industrial Environments and so exposure to all that you mention is the same... except, of course, that multiple devices are not hung off...
  20. Good day BacMan, I do not understand the...

    Good day BacMan,

    I do not understand the meaning of your post... How does this influence your usage of a shield? Are you saying that the bidder installs whatever wire they wish you you just have...
  21. Good day JohnLoves2ski, Do you have any...

    Good day JohnLoves2ski,

    Do you have any issues/concerns over Ethernet cable installs? Ethernet uses unshielded twisted-pair and has been the standard for a very long time... and Ethernet has a...
  22. Replies
    15
    Views
    5,794

    Good day Randy, If you go to our website...

    Good day Randy,

    If you go to our website (check my profile) for our USB device you will find two PDFs that detail what you need to do. You need to have Win7 Professional or Ultimate, as these...
  23. Just a FYI in anyone is interested... For...

    Just a FYI in anyone is interested...

    For RS-485 communication the shield is actually not needed. The reason being is that RS-485 is a differential signaling protocol...in other words the digital...
  24. Replies
    11
    Views
    1,628

    Bingo! It is funny how "old school" business...

    Bingo! It is funny how "old school" business practices just make sense. It is unfortunate that these practices are becoming rarer these days.

    Cheers,

    Sam
  25. Good day mscheffel, Your bus reference should...

    Good day mscheffel,

    Your bus reference should not be Earth grounded... this can cause all sorts of issues and can actually be dangerous in the event of an electrical failure within a particular...
  26. Google's Open Source Network test Tool - NoGoToFail

    Good day All,

    I thought that this might be of interest to some of you.

    Cheers,

    Sam

    http://www.zdnet.com/google-releases-nogotofail-tool-to-sniff-out-known-https-flaws-7000035445/
  27. Thread: HVAC Pro

    by s2sam
    Replies
    44
    Views
    4,752

    Good day Pascone10, Another virtual machine...

    Good day Pascone10,

    Another virtual machine you can use is Virtual Box which is free (https://www.virtualbox.org/). That being said the VM is only one element you need... you will also need a...
  28. Thread: HVAC Pro

    by s2sam
    Replies
    44
    Views
    4,752

    Good day Pascone, I cannot comment...

    Good day Pascone,

    I cannot comment specifically about the Digiport...but you should have to install the drivers twice... once in Win7 (64 bit) and then again in XP Mode. Remember XP Mode is a...
  29. Replies
    4
    Views
    475

    Good day rjk_cmh, The RPI is tailored and...

    Good day rjk_cmh,

    The RPI is tailored and manufactured for a completely different market and so the components used, although similar, are actually different. For example:

    1. RPI's sales...
  30. Replies
    4
    Views
    475

    Good day rjk_cmh, Indeed, Ethernet has a lot...

    Good day rjk_cmh,

    Indeed, Ethernet has a lot of benefits and is extremely well supported by a huge number of companies that provide a lot of equipment. However, pushing Ethernet all the way down...
  31. Replies
    39
    Views
    3,522

    Good day Fisha, There could be a lot of...

    Good day Fisha,

    There could be a lot of reasons for this. Firstly, the data corruption, retries, etc could be masked by the controllers and so you may not see this on the BAS. Secondly, the...
  32. Replies
    2
    Views
    474

    Good day TechServices, I am unsure what you...

    Good day TechServices,

    I am unsure what you are asking... However, RS-485 is supposed to daisy-chain connected like what you have already done. Connecting the system as what is proposed creates...
  33. Replies
    39
    Views
    3,522

    Good day Aaron, Given what the customer has...

    Good day Aaron,

    Given what the customer has said, it would seem that either you have some flakey controller(s). If a controller/system works for a while and then at some time requires a power...
  34. Replies
    39
    Views
    3,522

    Good day Aaron, If I understand your response...

    Good day Aaron,

    If I understand your response correctly... you changed the data rate of the system and added a router to the system and then the problems resulted? If so, then either the router...
  35. Replies
    39
    Views
    3,522

    Good day Fisha, If the system has had 0...

    Good day Fisha,

    If the system has had 0 changes... i.e. no baud rate changes, new controllers added/deleted, the cable has also not been compromised (cut, spliced, submerged in water, etc) ...Then...
  36. Replies
    39
    Views
    3,522

    Good day Fisha, Can you provide the timebase...

    Good day Fisha,

    Can you provide the timebase and voltages used in your captures? This info is on the captures, but are too small for me to read them clearly. That being said, the issue(s) could...
  37. Replies
    14
    Views
    1,469

    Good day Orion242, I picked up a perfect...

    Good day Orion242,

    I picked up a perfect almost new FX-60 for about $460 on Ebay. However, this is not overly common. That being said, I only use it internally for testing, etc.

    Cheers,

    Sam
  38. Replies
    6
    Views
    598

    Good day Integrator, Thank you for the...

    Good day Integrator,

    Thank you for the compliment!

    Indeed, HVACPro tunneling over Ethernet will not work with the S2N2E. Is it possible for it to work? Yes, but the inherent Ethernet latencies...
  39. Replies
    6
    Views
    598

    Good day Ex-Man, If you do a search on here...

    Good day Ex-Man,

    If you do a search on here you will find some info on this. In brief, using simple RS485 to Ethernet convertors is rarely successful unless you have a very specific and limited...
  40. Thread: Cylon buys AAM

    by s2sam
    Replies
    16
    Views
    1,529

    Good day Control Man, Perhaps one of the...

    Good day Control Man,

    Perhaps one of the reasons for this is the market size. Although Canada is huge in Area, it only has about 1/10 the population of the US (and thus more buildings, etc) and...
  41. Thread: hvacpro

    by s2sam
    Replies
    25
    Views
    2,712

    Good day michael26, Indeed, this would be...

    Good day michael26,

    Indeed, this would be easiest and most cost effective solution. However, finding a replacement device may not be that easy. A number of older JCI controllers have been...
  42. Thread: hvacpro

    by s2sam
    Replies
    25
    Views
    2,712

    Good day Michael86, For WinXP you need a...

    Good day Michael86,

    For WinXP you need a minimum HVACPro version of 8.04b... Anything newer than that will work on XP. As for the old cablepros... I believe (I could be wrong though) that as...
  43. Replies
    12
    Views
    1,050

    Good day Matrix, Indeed, there are cases where...

    Good day Matrix,

    Indeed, there are cases where one terminating the drain in other ways (like you mentioned) is beneficial to those networks that are exceptionally cranky... and even some cases...
  44. Replies
    12
    Views
    1,050

    Good day All, To those that do not agree with...

    Good day All,

    To those that do not agree with my post about avoiding Earth grounding the RS-485's Reference lead... I have to ask them what purpose do they think Earth Grounding achieves on a...
  45. Replies
    12
    Views
    1,050

    Good day just_opinion, I just posted my...

    Good day just_opinion,

    I just posted my response to doing this in my previous post.

    Cheers,

    Sam
  46. Replies
    12
    Views
    1,050

    Good day TechServices, That is correct... you...

    Good day TechServices,

    That is correct... you typically should not connect the Reference lead to Earth Ground. There are a multitude of variables that affect this decision, but typically avoiding...
  47. Replies
    12
    Views
    1,050

    Good day TechServices, The RS-485 Reference is...

    Good day TechServices,

    The RS-485 Reference is used to maintain a common or "Reference" RS-485 transceiver ground between the various interconnected RS-485 devices and is not actively part of the...
  48. Replies
    16
    Views
    1,511

    Good day Ynut204 Agreed. They should be able...

    Good day Ynut204

    Agreed. They should be able to provide you with what their input accuracy is. It is certainly calculable, but does take effort. Not saying that this is the issue, but some...
  49. Replies
    16
    Views
    1,511

    Good day Orion242, Your thought process is a...

    Good day Orion242,

    Your thought process is a good one. However, this approach does have some level of error, as the Meter and the Controller will most likely have a different input design which...
  50. Thread: N2 Wiring?

    by s2sam
    Replies
    6
    Views
    582

    Good day Cagey57, You are too kind... After 24...

    Good day Cagey57,

    You are too kind... After 24 or so years using and designing RS485 systems, one tends to pick up a little bit of info along the way ... That being said, there is still more to...
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