1. COM1 and COM2 of Shihlin EC series HMI are capable of supporting RS-232 / RS-422 / RS-485 protocols; COM3 is for RS-232, PLC and other device. 2. Ethernet communicate via PC and PLC. 3. USB communication port contain one USB HOST and one USB CLIENT. Find quick answers in the Shihlin Electric FAQ—selection, wiring and troubleshooting for circuit breakers, magnetic contactors, AC drives, servo, HMI and PLC control.
1. COM1 and COM2 of Shihlin EC series HMI are capable of supporting RS-232 / RS-422 / RS-485 protocols; COM3 is for RS-232, PLC and other device.
2. Ethernet communicate via PC and PLC.
3. USB communication port contain one USB HOST and one USB CLIENT.
The Shihlin Electric Company Profile introduces a Taiwan-based manufacturer with 70+ years of engineering experience supporting low-voltage power distribution and motor control for industrial customers.
Our scope covers circuit breakers, switchgear and power distribution systems, magnetic switches and magnetic contactors—plus factory automation solutions including inverters, AC drives, servo motors and drives, HMI, controllers, PLC and system integration.
With long-term OEM/ODM collaboration and a growing global network, Shihlin Electric helps you standardize components, reduce downtime, and move from product selection to commissioning with practical technical support.