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Changes for page 1 Communication

Last modified by Hunter on 2024/07/01 10:54
From version 220.1
edited by Hunter
on 2023/03/18 16:06
Change comment: There is no comment for this version
To version 224.1
edited by Hunter
on 2023/03/23 15:04
Change comment: There is no comment for this version

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1996 1996  (% style="text-align:center" %)
1997 1997  [[image:1624342015914-382.png||height="486" width="800" class="img-thumbnail"]]
1998 1998  
1999 +== **Communicate with Modbus Meter** ==
2000 +
2001 +The following example is using the Linfee meter LNF96EY to demonstrate how to set up the Modbus communication.
2002 +
2003 +~1. Wiring the RS485 cable first. Because the pin 58 is A, the pin 59 is B for meter. Here we use the COM1 to connect. So the diagram like follows:
2004 +
2005 +(% style="text-align:center" %)
2006 +[[image:LinfeeTerminalDiagram.png]]
2007 +
2008 +2. Check the specific Modbus parameter in the communication menu from LED display.
2009 +
2010 +So from the following pictures, we can know the Meter Address is 85, Baud rate is 9600, CRC None.
2011 +
2012 +{{info}}
2013 +**✎Note: **Meter address usually corresponding to the Modbus Slave Station No. on the Modbus communication.
2014 +{{/info}}
2015 +
2016 +(% style="text-align:center" %)
2017 +[[image:MeterModbusAllView.png]]
2018 +
2019 +(% class="wikigeneratedid" %)
2020 +3. Set up the communication in the Configuration tab.
2021 +
2022 +(% class="wikigeneratedid" %)
2023 +Select the protocol as **ModBus RTU Slave (All Function)**. And set the communication parameters like below.
2024 +
2025 +(% style="text-align:center" %)
2026 +[[image:VNETCommunicationtabmeter.png]]
2027 +
2028 +(% class="wikigeneratedid" %)
2029 +4. Create new real-time monitoring tag accroding to Modbus manual
2030 +
2031 +(% class="wikigeneratedid" %)
2032 +Enter the address we want to read from the meter. The following table is intercept part of the manual for Linfee Modbus manual.
2033 +
2034 +(% class="wikigeneratedid" %)
2035 +**0x03/0x04 command data register address**:
2036 +
2037 +(% style="width:1142.22px" %)
2038 +|(% style="display:none" %) |=(% colspan="2" rowspan="1" style="width: 165px;" %)Address(% style="display:none" %) |=Description|=Data Format|=(% style="width: 254px;" %)Data Length(Word)|=(% style="width: 282px;" %)Remark
2039 +|(%%)(% style="display:none" %) (%%) HEX|(% style="width:107px" %)DEC|(%%)(% style="display:none" %) (%%) |(% style="width:100px" %) |(%%)(% style="display:none" %) (%%) |(% style="width:318px" %)
2040 +|(% style="width:107px" %)0x00|(% style="width:100px" %)0|Reserved| | |(% style="width:318px" %)
2041 +|(% style="width:107px" %)0x02|(% style="width:100px" %)2|Reserved| | |(% style="width:318px" %)
2042 +|(% style="width:107px" %)0x04|(% style="width:100px" %)4|Reserved| | |(% style="width:318px" %)
2043 +|(% style="width:107px" %)0x06|(% style="width:100px" %)6|Ua|float|2|(% style="width:318px" %)Phase Voltage data, Unit V
2044 +|(% style="width:107px" %)0x08|(% style="width:100px" %)8|Ub|float|2|(% style="width:318px" %)Phase Voltage data, Unit V
2045 +|(% style="width:107px" %)0x0A|(% style="width:100px" %)10|Uc|float|2|(% style="width:318px" %)Phase Voltage data, Unit V
2046 +|(% style="width:107px" %)0x0C|(% style="width:100px" %)12|Uab|float|2|(% style="width:318px" %)Line Voltage data, Unit V
2047 +|(% style="width:107px" %)0x0E|(% style="width:100px" %)14|Ubc|float|2|(% style="width:318px" %)Line Voltage data, Unit V
2048 +|(% style="width:107px" %)0x10|(% style="width:100px" %)16|Uca|float|2|(% style="width:318px" %)Line Voltage data, Unit V
2049 +|(% style="width:107px" %)0x12|(% style="width:100px" %)18|Ia|float|2|(% style="width:318px" %)Phase Current data, Unit A
2050 +|(% style="width:107px" %)0x14|(% style="width:100px" %)20|Ib|float|2|(% style="width:318px" %)Phase Current data, Unit A
2051 +|(% style="width:107px" %)0x16|(% style="width:100px" %)22|Ic|float|2|(% style="width:318px" %)Phase Current data, Unit A
2052 +
2053 +{{info}}
2054 +**✎Note: **We usually use the Data Type 4 for read the Modbus registers(Function code 03)
2055 +{{/info}}
2056 +
2057 +
2058 +
1999 1999  == **MODBUS RTU Master** ==
2000 2000  
2001 2001  Select the protocol "Modbus RTU Master",
LinfeeTerminalDiagram.png
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MeterModbusAddr.png
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MeterModbusAllView.png
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MeterModbusPara.png
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VNETCommunicationtabmeter.png
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