Micro-Controller Units ( MCUs ) typically have one or more integrated USART peripherals but lack an RS485 interface for serial communication using a twisted pair over distances of tens of metres. When required, an external interface is necessary. Two are needed for inter-MCU communication, or a USB-RS485 protocol converter dongle to transfer data to an application on a pc for example. In the image below the breadboard used at SpacerLabs for PIC MCU project development is shown. The MCU PIC16F18875 is being used.
 |
| RS485 interfaces at either end of 4.5m twisted pair |
No comments:
Post a Comment