M221 as Modbus Serial Gateway

[Arsyad_Nutrifood]

Dear All,

is there anyone can help me ?

i want to use M221 as Modbus Serial Gateway

is it possible ?

and how to do it ? because i'm not succeed yet

[ismailozinan]

Hi,

The M221 PLC has one RS-485 Modbus port. Using this port, you can read data from Modbus slave devices and assign the values you read to the internal registers of the TM221.
In the system, a client can also treat the TM221’s Ethernet port as if it were a slave (server) device, and the TM221 will serve its own registers to that client.

However, to do this, you need to write a small amount of code as described above.
It cannot be used as a gateway with only configuration settings like a typical off-the-shelf gateway device. Still, it can function like a gateway as long as the system requirements and limitations are taken into account.

[Arsyad_Nutrifood]

Dear @ismailozinan 

Thank you for your info,

but i still cannot actually succeed to pull data from my field device

this is the screenshot

is there anything wrong with it ?

can you help me ?