What are the available physical interfaces on the IG502?

FAQ
1
The IG502 features 2x 10/100Mbps Ethernet ports, 1x USB 2.0 port, and serial ports (either 1x RS232/RS485 + 1x RS485 or 2x RS485). Certain models also include an IO expansion with 4x Digital Inputs (DI) and 4x Digital Outputs (DO).