Fuji NJ series PLC Modbus RTU

Davo_Prog

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• Oct 10, 2010

• #1

Hello I need to establish comms between an older NJ series Fuji PLC and a new Omron PLC hopefully using Modbus RTU, I have success with the newer Fuji SPH and a Modicon M340 PLC, but do not have enough info on the NJ.

 

lostcontrol

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• Oct 10, 2010

• #2

Not enough information.

We need model no's ont he Omron PLC that you are using, & the register map of the Fuji PLC, presuming you are wanting to use the Omron as the master?

 

Davo_Prog

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• Oct 10, 2010

• #3

The mapping is not the problem it's the comms, just need to find an example on the NJ side, no problem with the Omron!!

 

lostcontrol

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• Oct 10, 2010

• #4

lostcontrol said:

Not enough information.

Click to expand...

What are you doing, reading/writing in what direction? What is the problem you are having?

It is hard to answer/help with questions that have limited information

 

Davo_Prog

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• Oct 10, 2010

• #5

Omron is the slave read/write, once again mapping not the problem no point in going down that road if comms not possible, there is no mention of modbus rtu comms in any of the nj manuals I have obtained seems that NJ will only communicate with other FA products!!