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  1. Replies
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    Good day Simux, It is true that in the past...

    Good day Simux,

    It is true that in the past tool options and availability were not as plentiful as is now and so one simply made do with what one had on hand. Our S2USB485 is one of several...
  2. Good day Steve, Thanks for the compliments......

    Good day Steve,

    Thanks for the compliments... there will be a little extra in your pay envelope this week :) ... As for the test software... stay tuned, as I have been (slowly) working on a more...
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    Good day All, Please do not do this. Although...

    Good day All,

    Please do not do this. Although this setup "can" work it violates the RS485 standard that is used with N2, Bacnet MS/TP, Modbus, etc. A laptop's serial port is based upon the...
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    Good day numbawunfela, Thank you for your kind...

    Good day numbawunfela,

    Thank you for your kind words! However, I have been thinking about ZB for a while now, but also what I could do. At the time I designed the S2USB485 (first design in...
  5. Good day JCIMan, Indeed, the hardware and the...

    Good day JCIMan,

    Indeed, the hardware and the firmware is pretty slick. I have made a few more versions of the base design for some other projects... and the more I use this base design the more...
  6. Good day JCIman, As numbawunfela mentioned, I...

    Good day JCIman,

    As numbawunfela mentioned, I think you should be OK with the 2-wire hub, as the JCI devices tend to the electrically isolated including the reference and so will be far more...
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    Good day numbawunfela, I wish I could be that...

    Good day numbawunfela,

    I wish I could be that way... but it is not the way I do things. Most JCI sales are to Branches and Field techs and so they are in pretty much the same boat as...
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    Good day JCIMan, Sadly I do not think I can...

    Good day JCIMan,

    Sadly I do not think I can adapt the current S2USB485 device to support ZoneBus. The issue is two fold. The first is that ZB has a different electrical interface. The second is...
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    Good day All, Thanks for the recommendations! ...

    Good day All,

    Thanks for the recommendations! What is interesting is that there has been a significant uptick in JCI Branches purchasing our S2USB485 devices... Given Cagey57's comment:



    I...
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    Good day stomachbuz, Not all controllers are...

    Good day stomachbuz,

    Not all controllers are designed in the manner you present. Some controllers operate its firmware out of non volatile memory (Flash) and use RAM for general data storage. ...
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    Good day black_syphilis, I can certainly...

    Good day black_syphilis,

    I can certainly understand your desire to try and improve what you have, but if the core hardware is not rock solid most will not care about new software features, etc as...
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    Good day Maxburn, Just a heads up, but adding...

    Good day Maxburn,

    Just a heads up, but adding wireless connectivity to a controller is trivial these days and adds little cost. Depending upon the wireless technology adding a pre-certified radio...
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    Good day numbawunfela, "YMMV" means Your...

    Good day numbawunfela,

    "YMMV" means Your Mileage May Vary. Effectively I am saying that your and others experiences may be different than mine and so take my comment as a data point... nothing...
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    Good day All Although not related to...

    Good day All

    Although not related to software/firmware, but has Easy IO updated their RS485 / Bacnet MS/TP interface in any of their newer products? I ask, as the last Easy IO controller I...
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    Good day stomachbuzz, Sadly, I have not...

    Good day stomachbuzz,

    Sadly, I have not reviewed the hardware on any of the Siemen's devices and so I cannot comment. Siemen's are certainly around my parts, but not used as much as other vendors...
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    Good day all, Although there is a fair amount...

    Good day all,

    Although there is a fair amount of core knowledge is needed to fully understand how the communication cable plays a vital role in having a robust communication system, below is an...
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    Good day All, These are valid points, but tech...

    Good day All,

    These are valid points, but tech can only go so far if improper cable is used... With that said, non ideal can still be used and still have a solid and reliable communication...
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    Good day numbawunfela, Gotcha... tells you...

    Good day numbawunfela,

    Gotcha... tells you where my brain is at... hardware/software/firmware. Corporate culture and politics are not part of my makeup and so explains why I never found a...
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    Good day numbawunfela, I hate to say it, but...

    Good day numbawunfela,

    I hate to say it, but the same statement could be used to describe me too :)

    Cheers,

    Sam
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    Good day numbawunfela, I cannot speak for...

    Good day numbawunfela,

    I cannot speak for jschulze or any inferences he may have made, but I can tell you that JCI's interfaces are one of the better designed ones I have seen. I have not...
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    Good day jschulze, Well said and I agree. ...

    Good day jschulze,

    Well said and I agree.

    Cheers,

    Sam
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    Good day stanbyyourword, On my side Modbus = $...

    Good day stanbyyourword,

    On my side Modbus = $ :) ... and so I do not complain about the protocol too much...

    Cheers,

    Sam
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    Good day jschulze, Indeed a solid...

    Good day jschulze,

    Indeed a solid understanding of RS485 is very important. It is unfortunate that that the info you presented appears to not have been read or understood by a number of the...
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    Good day Maxburn, No, I know of no single...

    Good day Maxburn,

    No, I know of no single class or a few classes that would provide the background needed to fully understand the physics behind this nor knowing how to setup and use the various...
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    Good day MaxBurn, Indeed there is no Modbus...

    Good day MaxBurn,

    Indeed there is no Modbus certification, however, it would be tough to do because:

    a. How old the protocol is. Some many manufacturers have done what they have done for so...
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    Good day Orion, Agreed... this is why I think...

    Good day Orion,

    Agreed... this is why I think it is best to keep to the old KISS principle and simply provide the data as 16-bit values and let the Bacnet side of things worry about the modbus...
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    Good day numbawunfela, I am always the...

    Good day numbawunfela,

    I am always the optimist... however, the realist in me realizes that no matter how much I plan or set aside for these projects, they seem to get bumped because of paying...
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    Good day fjr2007, It really depends upon your...

    Good day fjr2007,

    It really depends upon your current knowledge case. At a minimum one needs to have a solid grasp of electricity, physics... basically electromagnetic understanding. Once here...
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    Good day Orion, You forgot about cases where...

    Good day Orion,

    You forgot about cases where the final data value uses a multiplier that is an exponent and so three registers are needed (one reg for the value, one reg for the exponential base,...
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    Good day numbawunfela, Indeed, it is...

    Good day numbawunfela,



    Indeed, it is pretty slick what can be done with RS485. There are some that like to bash RS485 for being old, etc... but the reality is that it can work extremely well...
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    Good day zzip7, Bacnet MS/TP is electrically...

    Good day zzip7,

    Bacnet MS/TP is electrically an RS485 (EIA-485) bus and it does not care what gauge of wire is used. The key parameters are capacitance, inductance, and the characteristic...
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    Good day Orion, The problem here is that there...

    Good day Orion,

    The problem here is that there is a multitude of ways of representing modbus data and so it will be challenging to represent all possible data values based upon a vendor's use of...
  33. Thread: VPN Routers

    by s2sam
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    Good day All, Chip shortages are wide spread...

    Good day All,

    Chip shortages are wide spread and will affect a ton of industries and products. In fact if there are electronic devices/products that you need for yourself or for your projects, I...
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    Good day numbawunfela, We used to sell these,...

    Good day numbawunfela,

    We used to sell these, but not any more, as they are tough to price given the efforts to order parts, solder/assemble, package, and then ship the items. Simply taking these...
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    Good day All, Here is another idea as to what...

    Good day All,

    Here is another idea as to what can be done for these kind of applications. This connector/splitter is used for N2 applications, but can be used for pretty much all RS485...
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    Good day Maxburn, Indeed. Yes, 8 is or I...

    Good day Maxburn,

    Indeed. Yes, 8 is or I think was the limit of the attached AP's that could be meshed together. I agree that one would like to limit the number of hops, but sometimes you have...
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    Good day numbawunfela, Wireless can be a pain...

    Good day numbawunfela,

    Wireless can be a pain and especially so if one blindly follows various manufacturer's marketing nonsense. In the end there is no secret sauce to wireless, but is simply a...
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    Good day All, I have also had great results...

    Good day All,

    I have also had great results with the Ubiquiti meshed access points that MaxBurn mentioned. However, be advised that there is a limitation on how many of these AP's can be meshed...
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    Good day All, Another overview on the...

    Good day All,

    Another overview on the SolarWinds exploit...

    https://www.crowdstrike.com/blog/sunspot-malware-technical-analysis/

    In a nutshell what is being presented is that malware was...
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    Good day numbawunfela, Indeed, it was a...

    Good day numbawunfela,



    Indeed, it was a strange outcome, as it really made no economic sense with zero risk to them. Sadly, I have had other and similar experiences with them and so obviously...
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    Good day numbawunfela, I do not know the full...

    Good day numbawunfela,

    I do not know the full story of the CommBus Tester... but this device was made for JCI by B&B Electronics and was designed specifically for the N2 bus. My guess is that JCI...
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    Good day VAEngineer, I have no experience with...

    Good day VAEngineer,

    I have no experience with this tool, but I would say it could not do what you ask. I say this, as in order to look and compare the differences between these type of cables...
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    Good day and Happy New Year to you and everyone...

    Good day and Happy New Year to you and everyone else!

    There is no question that MS jumped right in there and certainly went after this aggressively. I totally agree that MS certainly has the...
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    Good day All, For those that are interested,...

    Good day All,

    For those that are interested, Microsoft posted a bit of their analysis (and some self promotion) here:
    ...
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    Good day numbawunfela, Great minds think alike...

    Good day numbawunfela,

    Great minds think alike :)



    I think it is... I am sure "Modbus" actually means to drink in some esoteric language.

    Cheers,
  46. Replies
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    Good day stanbyyourword, Understood and thank...

    Good day stanbyyourword,

    Understood and thank you for the recommendation. I typically do not use any other manufacturer's products, as if there are issues, etc then I am at the mercy of the vendor...
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    Good day stanbyyourword, Gotcha. Cheers, ...

    Good day stanbyyourword,

    Gotcha.

    Cheers,

    Sam
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    Good day stanbyyourword, Agreed on both...

    Good day stanbyyourword,

    Agreed on both accounts, except Bacnet does not require licensing per se' unless own licenses a library, etc. You did not mention another item to the list which is often...
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    Good day stanbyyourword, Sadly, my brain is...

    Good day stanbyyourword,

    Sadly, my brain is still is slo-mo these days... I do not understand the MSTP reference, please explain.

    Cheers,

    Sam
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    Good day numbawunfela, Indeed. However,...

    Good day numbawunfela,

    Indeed. However, Modbus is used so extensively in the Industrial World that the likelihood of it going away anything soon is very small. As Maxburn stated... Modbus is...
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