Arduino interfacing with ATC-1000 TCP/IP to RS-232 convertor

[jhankhana]

I am trying to configure ATC-1000 TCP/IP to RS 232 converter. Where is Arduino working as master connected with keypad. Arduino reads key and send it via TCP/IP using Ethernet W5100 Shield. Converter send convert it and send to PC via RS232 and I read it in modebus poll software. Here I am attaching Manual and SS of what configuration I am doing. Indicator LED for Power on and Ether link goes on but ACT which shows Data Sending/Receiving between Serial and the
Ethernet is off. I unable to find out where I am doing wrong.
Please help me with this.
For Arduino:
IPAddress ip(192, 168, 2, 168);
IPAddress gateway(192, 168, 2, 1);
IPAddress subnet(255, 255, 255, 0);

ATC-1000 User's Manual v2.0.pdf (429.7 KB)

[Juraj]

I would use it in server mode

[jhankhana]

with same configuration?

[Juraj]

other configuration values depend on your network and the device connected to UART

[jhankhana]

There is Computer's USB port on UART side. Below image show how my flow goes.

[Juraj]

so modbus TCP has server and client, not master and slave.
so in which role is your Arduino?

[jhankhana]

controller

[Juraj]

I don't understand why do you use the ATC-1000 adapter?