3/24/2020 2:31 PM | |
Joined: 9/20/2018 Last visit: 6/13/2022 Posts: 6 Rating: (0) |
Hi Hulzhex, Firstly thanks for your interest. Actually I mean Meter-Bus |
Last edited by: EngEmr at: 03/24/2020 14:33:45 |
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3/24/2020 3:08 PM | |
Joined: 9/27/2006 Last visit: 6/1/2024 Posts: 12259 Rating: (2670) |
Hello EngEmr; M-Bus (or Meter-Bus) is a dedicated network connecting meters (gaz, water, electricity) remotely, Here is their dedicated website, which offers documentation on the standard. https://m-bus.com/documentation Unfortunately, Siemens does not offer a dedicated M-Bus communication processor for any of their S7 PLCs. They propose Profinet-M-Bus gateways to connect to a S7-1200 to an M-Bus network. Communication with S7-CPU via M-Bus Gateway https://support.industry.siemens.com/cs/ww/en/view/109478527 Here are 2 other models of Profinet to M-Bus gateway that you can look at, as alternatives; there may be more on the Web. Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 03/24/2020 15:11:42 |
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This contribution was helpful to2 thankful Users |
3/25/2020 1:17 PM | |
Joined: 9/27/2006 Last visit: 6/1/2024 Posts: 12259 Rating: (2670) |
Hello EngEmr; If I understand what you are planning, you wish to connect your M-Bus-capable meters to a Bacnet network, through a series of interconnecting gateways. The S7-1500 CPUs cannot connect directly to a BacNet network, they must use a special Profinet gateway: https://support.industry.siemens.com/cs/ch/en/view/109476182 So, your architecture would invole: - a PN to Bacnet gateway for the S7-1500 - a Bacnet to M-Bus gateway (using 3 separate elements from Loytec) to connect to your meters. In my experience, every intermediate equipment required to reach an end-point from a controller tends to become a potential source of errors, not even taking into account the detailing of the data points between Profinet, Bacnet and M-Bus. You are asking for trouble, in my experience. Limit the number of gateways needed in your project to one, if at all possible. Basically, the S7-1500 is an automation controller, not a Building Technologies controller; this is why it requires gateways to Building Technologies networks. And M_Bus is not considered an automation network, which is why gateways are needed to connect to a PLC.. Both Bacnet and M-Bus are considered HVAC networks. If the proposed gateway solution proposed by Siemens to connect an S7 CPU to M-Bus in the earlier thread does not satisfy you, you could think of a building automation controller, such as Siemens Climatix range, enabled for M-Bus data collection, using OPC or Modbus to send the data to the S7-1500, as an option. This would limit the error source to a sigle point (the HVAC controller) for each network, and the diagnostic capabilities of a controller are much greater than a gateways, making commissioning and debugging easier. https://new.siemens.com/global/en/products/buildings/hvac/oem/climatix/product-range.html Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 03/25/2020 13:25:53Last edited by: dchartier at: 03/25/2020 13:40:45 |
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