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Changes for page 1 Communication

Last modified by Hunter on 2024/07/01 10:54
From version 220.2
edited by Hunter
on 2023/03/23 11:16
Change comment: There is no comment for this version
To version 222.1
edited by Hunter
on 2023/03/23 14:55
Change comment: There is no comment for this version

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2000 2000  
2001 2001  The following example is using the Linfee meter LNF96EY to demonstrate how to set up the Modbus communication.
2002 2002  
2003 -~1. Check the specific Modbus parameter in the communication menu from LED display.
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 2004  
2005 -So from the following pictures,
2005 +(% style="text-align:center" %)
2006 +[[image:LinfeeTerminalDiagram.png]]
2006 2006  
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 +
2007 2007  (% style="text-align:center" %)
2008 2008  [[image:MeterModbusAllView.png]]
2009 2009  
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:1079.22px" %)
2038 +|(% style="display:none" %) |=(% colspan="2" rowspan="1" style="width: 165px;" %)Address(% style="display:none" %) |=Description|=Data Format|=Data Length(Word)|=Remark
2039 +|(%%)(% style="display:none" %) (%%) |(% style="width:107px" %)HEX|(%%)(% style="display:none" %) (%%) |(% style="width:100px" %)DEC|(%%)(% style="display:none" %) (%%) | | | |
2040 +|(% style="width:107px" %)0x00|(% style="width:100px" %)0|Reserved| | |
2041 +|(% style="width:107px" %)0x02|(% style="width:100px" %)2|Reserved| | |
2042 +|(% style="width:107px" %)0x04|(% style="width:100px" %)4|Reserved| | |
2043 +|(% style="width:107px" %)0x06|(% style="width:100px" %)6|Ua|float|2|Phase Voltage data, Unit V
2044 +|(% style="width:107px" %)0x08|(% style="width:100px" %)8|Ub|float|2|Phase Voltage data, Unit V
2045 +|(% style="width:107px" %)0x0A|(% style="width:100px" %)10|Uc|float|2|Phase Voltage data, Unit V
2046 +|(% style="width:107px" %)0x0C|(% style="width:100px" %)12|Uab|float|2|Line Voltage data, Unit V
2047 +|(% style="width:107px" %)0x0E|(% style="width:100px" %)14|Ubc|float|2|Line Voltage data, Unit V
2048 +|(% style="width:107px" %)0x10|(% style="width:100px" %)16|Uca|float|2|Line Voltage data, Unit V
2049 +|(% style="width:107px" %)0x12|(% style="width:100px" %)18|Ia|float|2|Phase Current data, Unit A
2050 +|(% style="width:107px" %)0x14|(% style="width:100px" %)20|Ib|float|2|Phase Current data, Unit A
2051 +|(% style="width:107px" %)0x16|(% style="width:100px" %)22|Ic|float|2|Phase Current data, Unit A
2052 +
2053 +
2054 +
2010 2010  == **MODBUS RTU Master** ==
2011 2011  
2012 2012  Select the protocol "Modbus RTU Master",
LinfeeTerminalDiagram.png
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