Pa/dp coupler

Guys

I need to link a flowmeter with pa profibus out put to 315 2pn/dp .

I figured out that i have to order a pa/dp coupler! So kindly  every body with experience about this issue help to purchase the best one .

I need the order number 

Merci

runaway7

Guys

I need to link a flowmeter with pa profibus out put to 315 2pn/dp .

I figured out that i have to order a pa/dp coupler! So kindly  every body with experience about this issue help to purchase the best one .

I need the order number 

Merci

 Hello,

https://support.industry.siemens.com/cs/ww/en/view/51678187 

http://support.automation.siemens.com/WW/view/en/21562130

Thank you 

Im reaaally confused ! It means for connecting two endres hauser promass 53 pa flow meter to 315 2pn/dp i need both dp/pa coupler and dp/pa link?

So how i can configure it in hw configurtion?

I apprecite your immediate help

Hello runaway;

Let's try to summarize the contents of the links proposed by Stefano earlier.

To connect a PA instrument (or 2....) you need at minimum a Profibus-DP network and a DP/PA coupler (FDC 157-0). This network interface module ensures that data exchanges between the DP network an the PA bus are achieved correctly. However f you use only a coupler to interface your PA instruments, the whole Profibus-DP bus must be operated at a speed of 45,45 kB.

If that network speed is unacceptable for your project (say you are also controlling machines on Profibus-DP that require higher bus speed for control) , then you should setup a DP/PA link. Which consists of a IM 153-2 module connected to a number of PA couplers (up to 5 in one link, each with a number of PA instruments). This will allow the DP network to operate at up to 12 MB, the maximum speed of a Profibus-DP bus, while the PA side will work on it's own bus speed of 31,25 kB. The link will synchronise the data exchanges between the DP and PA sides.

If you use only a DP/PA  coupler, you do not configure the coupler module in the Profibus configuration. You integrate each PA instrument directly on the Profibus line using its (PA) gsd file (even if in reality they are connected to the DP line through the DP/PA coupler). Remember in that case that the bus speed needs to be brought down to the 45,45 kB speed limit.

To work with a DP/PA link , you must insert a IM 153-2 as a Profibus slave, and insert your PA instruments on the Profibus-PA bus that will appear in your configuration (you will have to add the instrument gsd file to the catalog). Again the DP/PA couplers are not configured as part of the DP/PA link.

Study the contents of the links above and see if things are clearer now.

Hope this helps, 

Daniel Chartier

Yes . Thank you.

Your comments were really helpful.

Si i have to purchase a dp/pa link .Do you know whats the different between a redundant a non reduntant im153.2? I have 80meter distance to first flowmeter and around 40meter for second one

Hello runaway;

You have many questions, most of them should find their answers in a review of Profibus-PA (and how it differs from Profibus-DP):

Start by opening the introduction to this manual from SMAR, it gives a great overview of Profibus-PA:

Profibus-PA manual (SMAR) :

www.smar.com/PDFs/Manuals/GERAL-PAME.pdf

Next: Cable and connectors for Profibus-PA is different from the ones you use for Profibus-DP. DP uses the RS-485 standard, and PA follows the Manchester-Coded Bus-Powered standard, and the cable is different (different construction, different capacitance):

PA Cable:

-Siemens: :6XV1830-5FH10 (non-EX) or 6XV1830-5EH10 (EX)

See the Siemens Industry Mall:

https://mall.industry.siemens.com/mall/en/WW/Catalog/Products/9300219?tree=CatalogTree

-Belden : 3076F (standard)

https://www.belden.com/products/industrial/cable/bus-cable/profibus

PA Connectors :

-Siemens: see attachment below, SplitConnect system

-MTL MegaBlocks 

https://www.mtl-inst.com/product/megablock_range_of_wiring_hubs/

Distances: a Profibus-PA segment can cover up to 1900 m, and should be terminated (both connector systems proposed have termination systems).

You need a redundant IM 153-2 (for a redundant DP/PA link) only if you have 2 redundant Profibus-DP masters in your system, such as a S7-400H project. For your application (from the little information we have)  it does not seem necessary. 

As far as diagnostics are concerned, all Profibus-PA exchanges contain exactly 5 bytes with each connected and configured instrument. The first 4 bytes hold a REAL value (IEEE floating-point format) that shows the main measurement from the instrument, The last byte is a status code that you can find in the instrument's PA manual, and that you can decode in your PLC or HMI to warn or alarm the operator.

If this information is enough for your project, you need no other software. However if you also want to calibrate, change PA addresses on the instruments, otherwise modify or monitor the functioning of the instruments, you will require a software named PDM (Process Device Manager): open the Product Information tab for an overview of PDM versions.

https://mall.industry.siemens.com/mall/en/WW/Catalog/Products/10023472?tree=CatalogTree

Hope this helps,

Daniel Chartier

dear dechartier

I wonder if you could help me in the link below about this topic.

https://support.industry.siemens.com/tf/ww/en/posts/et200m-link-communication-with-cpu3152pn-dp/222189/?page=0&pageSize=10

regard