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register address of various perameters in Mag 8000 to communicate using Mod Bus Rs-485
Created by: T Murali at: 8/30/2010 1:27 PM (4 Replies)
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| 8/30/2010 1:27 PM | |
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Posts: 11 Rating:
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Hi Can you give me the register address of various perameters in Mag 8000, by which we can communicate it with the PLC using Mod Bus Rs-485. |
Last edited by: CS Moderator at: 8/30/2010 2:15 PMnew subject after splitting |
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| 8/30/2010 2:14 PM | |
Joined: 9/27/2006 Last visit: 12/1/2024 Posts: 12299 Rating:
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Hello T. Murali; These document contains the EDD files for Modbus RTU for the Mag8000. The .chm file included contains a list of the required register mapping. However, it is meant for use with PDM software. I do not know at present if you can use Modbus on the Mag8000 without PDM v. 6.0. You would have to look through the documentation provided to you at purchase and ssee if any stand-alone Modbus driver can be used. EDD Modbus driver for PDM v. 6.0: http://support.automation.siemens.com/WW/view/en/40111868 Download of Modbus driver for Mag8000: http://support.automation.siemens.com/WW/view/en/24999116 Hope this helps, Daniel Chartier |
| 8/30/2010 9:12 PM | |
Joined: 3/28/2010 Last visit: 11/30/2024 Posts: 1090 Rating:
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I don't think the Mag 8000 was designed for generic Modbus communications because the Mag 8000 manual does not have a Modbus slave register address table. Although PDM and Flow Tool communicate to the Mag 8000 via Modbus, the authors of these tools arethe Mag 8000 designers/manufacturers, hencethey have access to information like the Modbus register table and respective word format for each value. For some reason(s), Siemens has chosen not to publish that data. The attached word doc has some screen shots of the Flow Tool software ID's, which are typically 3 digit ID's, not unlike 4xxxx register values for Modbus function code 3 for holding registers. But whether the correlation holds up is an experiment, not a configuration task according to a public documentation. Asnoted, some of the simple values, 1, 2, 109, etc.are likely unsigned integers, but complex date and time stamps or model numbers need some sort of decoding/decrytping or look-up table to make sense. Given the absence of a published register address table, it appears, you're on your own to use Modbus RTUto access the Mag 8000. Good Luck. AttachmentAccessing _or not_ Modbus registers in Mag 8000.pdf (328 Downloads) |
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| 9/7/2010 4:18 PM | |
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Joined: 3/28/2010 Last visit: 11/30/2024 Posts: 1090 Rating:
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Look on page 55 of the manual. Where to you find baud rate? |
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