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  1. Replies
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    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...
  2. Replies
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    618

    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...
  3. Replies
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    618

    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...
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    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...
  5. 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
  6. Replies
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    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...
  7. Replies
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    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...
  8. Thread: Cylon buys AAM

    by s2sam
    Replies
    16
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    795

    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...
  9. Thread: hvacpro

    by s2sam
    Replies
    14
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    1,151

    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...
  10. Thread: hvacpro

    by s2sam
    Replies
    14
    Views
    1,151

    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...
  11. Replies
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    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...
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    569

    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...
  13. Replies
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    569

    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
  14. Replies
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    569

    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...
  15. Replies
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    569

    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...
  16. Replies
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    837

    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...
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    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...
  18. Thread: N2 Wiring?

    by s2sam
    Replies
    6
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    295

    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...
  19. Thread: N2 Wiring?

    by s2sam
    Replies
    6
    Views
    295

    Good day, Ideally two of the three wires being...

    Good day,

    Ideally two of the three wires being a twisted-pair and the third used as a reference, low capacitance (around 12pf per foot), and ensure that the wire has a characteristic impedance...
  20. Good day Integrator, I am not sure what high...

    Good day Integrator,

    I am not sure what high end Fluke you used, but if it was designed for Ethernet then this is not the right tool. Although Ethernet is (several) twisted pairs, its electrical...
  21. Good day Davem, A TDR is pretty slick. In...

    Good day Davem,

    A TDR is pretty slick. In fact, I really like demonstrating a little bit of what a TDR can do to those that are skeptical of how wires look different at higher frequencies. What...
  22. Good day Davem, You can certainly do this, but...

    Good day Davem,

    You can certainly do this, but it is a lot of effort to disconnect all of the controllers connected to the bus. If you have and know how to use a TDR you can determine each...
  23. Good Day HVAC_Marc, The device works by...

    Good Day HVAC_Marc,

    The device works by generating a very fast electrical waveform and then measures/captures the reflected signal that occurs. By interpretation of the reflected wave a variety of...
  24. Good day Integrator, As cLogic stated ... a...

    Good day Integrator,

    As cLogic stated ... a TDR would be needed. However, even using a TDR you will still need to know the cable's impedance characteristics (i.e. characteristic impedance,...
  25. Good day 54885488, Indeed the current...

    Good day 54885488,

    Indeed the current version/design of HVACPro does not lend itself to doing what you (and others) want for a number of reasons. However, there is a very good probability that...
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