The way Siemens does Modbus is convoluted trash and requires a special license as well as the knowledge of Modbus registers and how to build custom ISB files. I've gotten pretty good at it over the years but there's no reason to not use BACnet first. Integration is also not a huge selling point for Siemens in my opinion. Siemens thrives on proprietary and full equipment control. Customers are usually wowed in the beginning with low integration prices and disappointed in the end with lack of direct control that is the alternative. Not to mention the inflated cost when you have to have the 3rd party come out and pretend to work on their controls.
You clearly have no grasp of Modbus or BACnet fundamentals.
MODBUS isn't going anywhere in the foreseeable future. Absolutely tons of stuff still use it, especially energy meters and industrial electrical equipment because it is essentially free for the device manufacturers to add. Contrast this with the cost (upfront and royalties) to buy a good quality BACNet stack for your software development, and then paying BTL to certify it and it's easy to see why so many devices still use it. Yes it sucks if you don't have a register map 10 years down the road, and most companies leave out relevant data like is that register 2 bytes or 4 bytes wide and you have to make educated guesses and experiment to get it right, on the other hand, once working they do tend to stay working.
Pretty dead on with Modbus being the most popular comm protocol in the world, spanning over multiple different industries, and will be in use for decades to come.
The story with the TEC retirement is that the only chip manufacturer left in the world with the capability of making the TEC chip told Siemens they were done making it. Apparently it was a very old chip that only a few companies still were buying. The DXR runs on the same chipset as the PXC line of field panels so that was the cheapest option for them. But because it's a different chipset, that means new firmware would need developed for it. So that's where ABT Site came from.
There's so much misinformation here, I don't know where to start.
Pretty much every computer chip ever made, dating back to the early 1970s is readily available from one source or another. In many [industrial] applications,
extremely old processors are used when simplicity, proven reliability, and dirt cheap cost are key priorities.
Retiring an entire line of controllers, that have been in production for 30+ years, because a vendor is discontinuing a specific variety of processor is utter BS and reveals your ignorance.
The DXRs and PXCs have
absolutely nothing in common. Hardware or otherwise. Once again, you have no idea what you're talking about and have clearly never read a tech spec sheet.
PXCs use a Motorola PowerPC chip, originating in the early 1990s. The PXC16/24 have a 100MHz with 16MB if RAM. PXC36/M have a 133MHz variant with up to 80MB RAM.
The DXR runs a Linux-based OS, has a modern 300MHz processor made by Texas Instruments, and has 512MB of flash storage, with 128MB of DDR3 RAM.
They literally have absolutely NOTHING in common except "Siemens" on the cover.
Please don't talk on things you know nothing about and spread misinformation.
I mean, yeah...I totally know what you mean.
