How to conect to several Slaves IDs using Modbus TCP?

CODESYS
1

Hi,

I’m trying get information of 4 Solar Inverters that are concentrated in a only device (datalogger), but each with a Slave ID. So, in Codesys i was trying to create several “Modbus TCP Slaves” devices, but it works only for first inverter. Can you help me in this case, please?

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2

Hello, can you check if those parameter are good ?
Slave IP Address:

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Slave Unit ID (Default 255):

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Could you also please share this screen to see what error you have:

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3

Hi,

For sure. It looks like good:

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4

The slaveID also:

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5

But the Status is in error:

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6

Right now, i’m using ModSim with 4 SlaveIDs:

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Thanks

7

You seem to read from the address 5003 (16#138B) with a length of 46 (end address is 5048).
But your simulator declare the register 5000 to 5039 (Start 5000 length 40)
Can you try to augment the simulator size (size 50 should be good).

2 Likes
8

Thats it! It works.

Thank you so much