[FX3U-485ADP-MB Problem need help]

the request is coming from the PC.  The Scada will do the sending and requesting.  baseblock is just a modbus testing software that work with moxa.   The settings of the comms on the moxa is the same as i configured in the PLC.  I did clear the FX memory and reloaded the program

 

 

[FX3U-485ADP-MB Problem need help]

i have changed it as you proposed.  i am testing the communication with Baseblock Com test and still it gives me an error: No Response received.   I can see that the RD light flickers red but nothing on the SD light.

[FX3U-485ADP-MB Problem need help]

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.