LS G4l-duea R-Net (Open Type) Fiber Optic Industrial PLC.
It is a PLC module of LS Electric (formerly LG).
Based on other modules in the same series, it is speculated that it may have the following common features:
Program capacity: It may be similar to other products in the same series, such as about 10K steps.
Processing speed: About 0.1μs/step.