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FST020 Profibus

Created by: neman at: 7/19/2020 7:58 PM (2 Replies)

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7/19/2020 7:58 PM	Rate (0)
neman Posts: 25 Rating: (0)	Hello, I'm a student so I'm pretty new to this. I'm using the fst020 for a project and I was wondering if it supports profibus pa? I can't seem to find a gsd file in step7 for it.
neman Posts: 25 Rating: (0)
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7/19/2020 8:42 PM	Rate (2)
dchartier Grandmaster Joined: 9/27/2006 Last visit: 12/26/2024 Posts: 12316 Rating: (2695)	Hello neman; The description found for the SITRANS FST020 only allows an RS 232 connection for Modbus and Bacnet. You can find this description in the following link: http://www.siemenstransmitter.com/ Look for the FST020 ultrasonic flowmeter in the middle of the page, drill down to the documents available for download. Details for the FST020 Modbus register mapping amd Bacnet MSTP Device Objects can be found in the following manual, in Appendix A.5: SITRANS FST020 IP65 (NEMA 4X) - Operating Instructions https://support.industry.siemens.com/cs/ww/en/view/104423075 Hope this helps, Daniel Chartier Attachment SITRANS FST0200 communications.jpg (375 Downloads)
	Last edited by: dchartier at: 07/19/2020 21:54:21 Last edited by: dchartier at: 07/20/2020 12:55:37
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7/19/2021 5:39 AM	Rate (0)
danw Gold Expert Joined: 3/28/2010 Last visit: 12/24/2024 Posts: 1099 Rating: (216)	The FST020 has never had HART to my knowledge. So it would have to use Modbus to communicate. The FS220 spec sheet is in the Siemens 2021 catalog. Page 3-353 has this statement: "Fully compatible with Siemens PDM version 8.2 service pack 1 or higher." My caveat: the statement above probably infers that only recent FST020 units with the latest firmare are PDM compatible The 2012 catalog sheet (prior to the digital interface card) does not mention PDM for obvious reasons (no communications) The 2015 catalog sheet that has the Modbus/Bacnet interface card does not mention PDM. I suspect that PDM had to be updated after the introduction of the interface card in order to communicate with the FST020/FS220. I believe PDM communicate over Modbus because I have some vague memory of doing that the former Milltronics HydroRanger line ultrasonic transmitters. I guess you get to mess with PDM and its Modbus (presumably RS-485 Modbus RTU) setup and see whether you get it to connect. Maybe PDM is documented somewhere; I could never find a users manual for it when I needed it 5-10 years ago

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