Whether the hardware of the haiwell PLC communication port have photoelectric isolation or not? How about the drive capability?
The hardware of the haiwell PLC communication port doesn’t have photoelectric isolation, normally it doesn’t need. In the case of big interference, it is better to add communication isolator which can improve the quality of communication. The Haiwell communication extension module of S01RS, H01RS and H02RS all have the communication isolator.