If you need to connect more than two things to the internet (PLC, HMI, laptop, etc.), then you need an Ethernet switch in your control panel. IDEC Ethernet Switches offer industrial-grade designs, noise resistance and higher vibration and shock resistance compared with commercial switches.
Ethernet Switch
A fast, 5-Port Unmanaged Industrial Ethernet Switch with a wide range of operating voltages and operating temperatures. With a compact, industrial-grade design and rugged metal housing, this switch is suitable for installation in Class I, Division 2 hazardous locations and for industrial applications in harsh environmental conditions requiring an IP30 degree of protection.