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Post by viperlasser on Dec 8, 2017 12:07:11 GMT
Is it possible to configure HMI as
Modbus master on rs232 and as modbus slave on rs485 terminals ?
I.e on rs232 terminals hmi reads data from slave and on rs485 terminals hmi share data as modbus slave
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Post by WECON Support on Dec 9, 2017 1:49:15 GMT
it is ok. can you tell me why you need to do like this?
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Post by viperlasser on Dec 9, 2017 6:51:54 GMT
I need this for reading RFID by rs232 and also I want to share this result (from rfid) on rs485 as modbus slave.
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Post by WECON Support on Dec 11, 2017 2:08:47 GMT
Ok, I see.
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Post by viperlasser on Dec 12, 2017 11:03:08 GMT
WECON Support: Can You give me some advice what can I do with this kind of functionality ?
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Post by WECON Support on Dec 13, 2017 2:00:56 GMT
i have sent a demo to your email. please check.
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Post by viperlasser on Dec 13, 2017 17:56:49 GMT
Thank You Pein for help. After some adjustment timeout, retries and so on it works ok  Now I was wondering how can I make data mapping from one device to modbus slave (on hmi) In example hmi read data on rs232 as modbus rtu (client). On another port share this data. I don't know where is stored value from port on rs232. What kind of registers HDW ? I know that modbus slave (on hmi) is started from HDW3500. Edit: So far after looking at help in LeviStudioU I found out that access to device in script is realised in that way @w_HDW3500 = @w_1#1:42 where @w_1#1:42 mean hmi station _1 and after # 1:42 - mean id=1 and 42 (40002 in modbus) and it works Edit2: I know that my task - mapping from rs232 to rs485 can be made by "address mapping" but this works propertly for 2 physical com ports. In my case for hmi 350t I have only 1 port so adress mapping not works. As I mentioned earlier I can copy data from rs232 to rs485 by scripting but I don't know why from time to time instead of readed value I have 0 value writen to HDW3500. How can I detect good received frame from rs232 ? I know about communication memory map but for comm no. 1 and station no. 1 nothings happen on hmi. It always show false when I see on the screen that value are changing (from modbus).  |
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Post by WECON Support on Dec 14, 2017 2:15:00 GMT
in 350t you could still use the address mapping, you could find it at "setting-----address mapping ". you could try at first, if still not ok, i try to make a demo.
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Post by viperlasser on Dec 15, 2017 21:33:13 GMT
I have working solution. Thanks for help.
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Post by WECON Support on Dec 18, 2017 1:27:51 GMT
Ok, a pleasure.
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Post by denimistry on Feb 17, 2018 7:56:41 GMT
Is it possible to configure HMI as Modbus master on rs232 and as modbus slave on rs485 terminals ? I.e on rs232 terminals hmi reads data from slave and on rs485 terminals hmi share data as modbus slave i am beginner to hmi to modbus communication i have some doubts on adressing mapping. please give idea for how to use source address ,trigger address,and destination address . |
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Post by WECON Support on Feb 24, 2018 2:58:58 GMT
sorry, we just come back from the chinese new year holiday. check the demo as below mega.nz/#!OAkAFJRS!PngG81fhu1zunx6jgbQjCVmY6uobcVOKmUDCBdd3mZ8 |
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Post by thepira on Jun 7, 2020 2:46:42 GMT
I´m using Levi 350 T with a controler K30 from Ascon (Italy) and I want to comunicate with a NODE MCU . I'm thinking in write in NODE as it was a Memory , tem I could read the information on de NODE from a iPhone our Android. All using RS485.
Do you have any information or example to help me?
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