How to port forwarding with config default gateway on InHand IR302

Industrial Routers
, ,
1
I have a old PLC. I can config the PLC's LAN IP(192.168.2.2) address manually but there is no Default Gateway setting. And I have IR302 with a public statip IP(166.123.4.9) address from SIM provider.
Since I can not config default gateway on PLC, I want to know how to config the IR302 so I can access PLC remotely via the public static IP
2
Dear Customer,

Since you already have a static public SIM plan, you could setup Port Mapping so that you can remotely access to the PLC via public IP address.

Please refer to the below article about how to config Port Mapping: