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How to update E/V5 series controllers via RS-485?
No. S01301004-EN

Serial NO : S01301004-EN

Date of Editing :  2015-06-24

Questions : How to update E/V5 series controllers via RS-485?


  • Supported version -SoyalDeviceTools released on May 10th, 2014 or after.
  • Firmware version [3.02 and after] support to update firmware by RS-485.
  • If firmware is [3.01 and before], please kindly refer to the Part 2 for instruction.


Firstly power the controller with RS-485 connection and run the latest version of UDP Updater.


Part 1: UDP Updater Instruction:

STEP1: Load the latest firmware of controller.

STEP2: Select the correct COM PORT& Node ID.

STEP3: Click “Update F/W”

  • STEP4: It takes around 2 minutes to update the firmware.

  • STEP5: FW update complete!

  • STEP6: Re-power the device!

Part 2: Firmware is 3.01 and before

STEP1: Connecting the device via TCP/IP and update the boot loader file (BLS881EV___V0200.STM).

STEP2: Update the latest firmware for the device via TCP/IP.

STEP3: Now, the controller is able to use RS485 to update the firmware. Please kindly refer to the first part “UDP Updater Instruction.

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