Communication driver for Melsec FX2N series use 'DLL-Melsec'.
Melsec FX2N series need Laddrer setting for communication.
Melsec communication driver use Format 1 protocol. So, you should to set 'Dedicated Protoco', 'Protocol Format 1' at the Ladder program. (Also, set PLC station )
<Figure 1> is ladder setting method for Melsec FX2N series.
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| <Figure 1> Ladder setting method for Melsec FX2N series |
D8120 is communication area and D8121 is PLC station setting area. ( refer to <Figure 1> )
It needs 3.5.1 Ladder setting to maintain setting data. ( If don't set 3.5.1 setting data will be erased when 'Power On' )
Baud rate settin example)
Baud rate 19200, Parity none, Data bit 8, Stop 1 = MOV H6891 D8120,
Baud rate 9600, Parity none, Data bit 8, Stop 1 = MOV H6881 D8120.
Notes of Ladder setting
1. You can 'Write' when 'ON' setting the EEP-ROM protect switch. ( open the cover of PLC )
2. Please connect at connector that have 'Run/Stop' switch for PLC Ladder program.
3. Please power reset after writing the setting data.
Please refer to User manual of Melsec FX2N PLC.