NJ501 SCU32/42 Modbus RTU

[jackleggs]

Hi

I need to get data from a modbus rtu device to Omron PLC NJ501. I am using SCU32 or SCU42 as serial gateway. I have tried using sendcmd function, but I am having problrm with the DstNetAdr

Here's my setup

Cpu NJ501 1400

ID262

OD263

AD041 V1

EIP21

SCU32

My sendcmd parameter

DstNetAdr.NetNo:=USINT#0

DstNetAdr.NodeNo:=USINT#4

DstNetAdr.UnitNo:=BYTE#16#84

senddata array

02 03 00 6A 00 02 E4 24

Anyone has any idea on how to do it?

[photovoltaic]

You're using FINS commands not Modbus commands. For Modbus you'll need to load a Modbus protocol into the card with CX-Protocol and use the Protocol Macro instructions.

[jackleggs]

20 hours ago, photovoltaic said:

You're using FINS commands not Modbus commands. For Modbus you'll need to load a Modbus protocol into the card with CX-Protocol and use the Protocol Macro instructions.

Hi

Thank you for replying, I really have no idea how to load the protocol with cx protocol. If it's not a bother, could you teach me how? This is my second time using Sysmac Studio.

Can't sendcmd be used to send any serial command? I set my scu as serial gateway.

[photovoltaic]

Sent you an example program with the SCU and an NJ

[jackleggs]

20 hours ago, photovoltaic said:

Sent you an example program with the SCU and an NJ

Thanks a lot @photovoltaic

I will try your solution 

[jie en]

Any function block for using NJ with SCU card for modbus rtu ?