HF2211 Serial Server Device User Manual
http://www.iotworkshop.com - 38 -
If set to “Half Duplex”, the product enable RS485 interface. The flow control by default is set as
“Disable”, it need to use RS485, set it to “Half Duplex” as the following picture.
Figure 46. UART Half Duplex Function
3.13. Firmware Upgrade
HF2211 support OTA(over the air) firmware upgrade. User can use webpage to upgrade its firmware,
whether external or internal webpage(192.168.0.101/hide. Internal webpage can be used for upgrade
external webpage). Please check below example. IP address is assigned by router.
Figure 47. External web page
Figure 48. Internal web page