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Last modified by Iris on 2026/03/30 11:47
From version 4.1
edited by Iris
on 2025/10/22 15:35
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To version 3.1
edited by Iris
on 2025/10/22 15:32
Change comment: There is no comment for this version

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1665 1665  
1666 1666  The extended function is mainly used to communicate with PLC Editor 2.
1667 1667  
1668 -== **Communication function block** ==
1668 +== [[image:file:///C:\Users\Administrator\AppData\Local\Temp\ksohtml2512\wps2.png]][[image:file:///C:\Users\Administrator\AppData\Local\Temp\ksohtml2512\wps3.png]]**10.7 Communication function block** ==
1669 1669  
1670 -=== **1. SERIAL_MODBUS_WR** ===
1670 +=== [[image:file:///C:\Users\Administrator\AppData\Local\Temp\ksohtml2512\wps4.png]]**1. SERIAL_MODBUS_WR** ===
1671 1671  
1672 1672  SERIAL_MODBUS_WR - Modbus master serial communication
1673 1673  
1674 -[[image:1761118509428-681.png]]
1674 +[[image:file:///C:\Users\Administrator\AppData\Local\Temp\ksohtml2512\wps5.jpg]]
1675 1675  
1676 -
1677 1677  This function block is the setting function block for sending protocol frames by the Modbus master station (whether RTU or ASCII). When the contact in front of Enable is turned ON, according to the communication port, station number, function code, slave station address, quantity and mapped data address set by the function block, the data frame is combined and sent.
1678 1678  
1679 1679  **Device used**
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1793 1793  |31A0H|No available gateway for COM2 Slave station return information: Unavailable gateway (Please refer to Modbus exception 0A)
1794 1794  |31A1H|COM2 indicates that no response was obtained from the target device. Slave station return information: The device is not in the network. (Please refer to Modbus exception 0B)
1795 1795  
1795 +
1796 1796  **Example**
1797 1797  
1798 1798  **Application example**
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1895 1895  )))
1896 1896  |3190H|COM2 receives data beyond the cache limit.
1897 1897  
1898 +
1898 1898  **Example**
1899 1899  
1900 1900  **Application example**
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