Never seen it before but suspect it is a clone of the Mitsubishi FX series there are many versions of them, main differences are limited functionality, 232 rather than 422/485 port.
The LEDs all look they show the status of the X (Inputs?) and Y (Outputs?) with nothing to show whether or not a program is running. That suggests the unit is just an I/O device as others have already pointed out. Follow the cable at the lower right. Most likely it leads to the CPU.
The LEDs all look they show the status of the X (Inputs?) and Y (Outputs?) with nothing to show whether or not a program is running. That suggests the unit is just an I/O device as others have already pointed out. Follow the cable at the lower right. Most likely it leads to the CPU.
I am betting that the HMI an integrated PLC/HMI, and the part shown in post #1 is an expansion for this PLC/HMI combo.
Search for Samkoon PLC you will find some images of devices that look similar if not identical.
a lot of the samkoon and aliexpress fakes use FX part numbers from real mitsubishi PLCs too. so if you see anything on this that says FX, then I think they're on to something with the samkoon software.