HK-OEM Embedded Communication Module
The HK-OEM embedded communication module is an embedded IC module that expands industrial Ethernet and fieldbus protocol interfaces for industrial devices. It opens the USART interface to users, exchanging real-time network data with the main MCU application program, thereby integrating your device into the corresponding network without requiring extensive development work.
The module can run PROFINET, and in future version updates, we will introduce modules that run real-time communication protocols such as EtherCAT and EtherNet/IP.
○ Support for PROFINET protocol
○ With an IO signal of 32 pins, it can meet the digital IO design of 32 points and can be arbitrarily set to DI or DO
○ Open the USART interface to users
○ The HK-OEM module serves as the USART communication master and the user serves as the USART communication slave, using the standard MODBUS protocol
○ Dual port switch function supporting industrial Ethernet
The evaluation board can assist in the evaluation testing and secondary development of HK-OEM embedded communication modules, greatly reducing user development workload.
○ The evaluation board supports the USART interface
○ The evaluation board has an IO signal of 32 pins, which can meet the digital IO design of 32 points. These 32 IO pins can be arbitrarily set to DI or DO
○ The evaluation board provides an external RS232 signal for printing information
○ The evaluation board main chip uses STM32F103VCT6, and the development routine is written based on this type of chip
About HK-OEM
OEM designs two power supplies (two sets of power supplies on JP1 and JP2), and there is a 3.3V power supply on the JP1/JP2 pin that supplies power to the OEM module. It is best to connect it, otherwise it may cause insufficient power supply current or affect the current direction. The IO pin can be suspended.
At present, the Vendor ID and Vendor name are fixed within the module. Users can change the Vendor name in the gsd and XML files, which does not affect communication. The Vendor ID needs to be consistent with the internal module. When customers place bulk orders, they can make changes according to their needs. If the customer only wants to make changes on their own, they can modify the program architecture by initializing the Vendor name and Vendor ID, and opening permissions to the customer.
The module pins are TTL signals, and an external circuit with a 232 chip can be added. This part can be made on the user board.
Choose a double row pin holder with a spacing of 1.27mm, or use a 2 * 40P double row socket.
The latest version of the product only supports the PROFINET protocol, and a version of the EtherCAT protocol is currently being developed.
The OEM module is powered by 3V3 and GND pins. JP1 and JP2 each provide a set of power supply pins, with a core board of 3.3V and a total current of 800mA. It is recommended that users provide a power supply current higher than 1A.
Due to the OEM design of two power supplies (two sets of power supplies on JP1 and JP2), there is a 3.3V power supply on the JP1/JP2 pin that supplies power to the OEM module. It is best to connect it, otherwise it may cause insufficient power supply current or affect the current direction.
The 3V3P of JP3 is output after conversion by OEM modules, specifically providing power to the network interface circuit.
It is not recommended to provide users with clear design indicators for the resistance value, as the user’s design process is difficult to control. Therefore, users should design based on actual applications.
The external signal of the optocoupler can be any voltage, commonly 24V. The detection circuit here is DI/DO signal to MCU, where the MCU is STM32 on the OEM module.