I have got a FX3U-16M and -32M PLC and trying to connect with Moxa NPort 5130A serial device server to work with a scada. It seems that i dont get the modbus to communicate. I have tried the 110 ohm, 330 ohm and open setting on the device. I am making use of a 2 wire system. I have configured both the channel 1 and channel 2 of the PLC to work with MODBUS 485.
i have written a program like follow
M8411 ----------- Move H1087 D8400
----------- Move H1 D8401
----------- Move K2000 D8409
----------- Move K400 D8410
----------- Move K10 D8411
----------- Move K3 D8412
----------- Move H1 D8415
----------- Move K100 D8416
I just need to test if there is communication from these cards. i have got 15 cards to test.
Any other help will also be appreciated.