RTR-500DC Firmware Update Tool

Software for updating the RTR-500DC firmware.


Software for updating the RTR-500DC firmware.

Compatible ProductsRTR-500DC
VersionVer. 2.1 (August 24, 2023)
File Nameapp-rtr500dc-firm-210-all.exe
File Size8.74 MB
Operating EnvironmentCompatible OS *1
Microsoft Windows 11 64bit English
Microsoft Windows 10 32/64bit English
CopyrightT&D Corporation
ReplicationCopying to another media is expressly forbidden
*1: For installation, it is necessary to have Administrator (Computer Administrator) rights.

Important Note

Please also update your RTR-500DC for Windows if it is not the latest version.

Firmware Update Procedure

  • During the updating process, make sure not to turn off the power of the RTR-500DC or disconnect the USB cable. Either action may cause the RTR-500DC to not work properly.
  • All recorded data stored in the RTR-500DC will be erased when you update the firmware.
  • Note that clock settings will be initialized (2010-01-01 00:00:00) upon execution of the update program.
  1. Using a USB cable, connect the RTR-500DC to the PC in which "RTR-500DC Firmware Update Tool" will be executed.
  2. Execute the downloaded "RTR-500DC Firmware Update Tool".
  3. Please follow the instructions on the screen to update the Firmware.

Revision History

Ver. 2.1 August 24, 2023

  • Fixed a problem in which data could be incorrect when two or more RTR500BC units are used as Repeaters and a communication error occurs between them.

Ver. 2.0 July 28, 2022

  • Fixed a problem that occurred when registering the RTR500B Series Remote Unit which has been registered in the RTR500BW/500BM as a “Visitor” to the RTR-500DC, where the Ch.1 lower limit setting was not displayed correctly.
  • Fixed a problem in which “COMM Error” was displayed as “Short Time” incorrectly when attempting to start recording from the [WL Record Settings] menu - [Immediate] option.

Ver. 1.8 December 7, 2020

  • Added support for the RTR500B Series Remote Units.

Ver. 1.6 October 31, 2013

  • It is now possible to change the recording interval and recording mode in [Record Settings] > [Start Recording] for wireless and optical/serial communication.

Ver. 1.4 October 16, 2012

  • Made compatible with the RTR-507 and RTR-576.

Ver. 1.2 July 01, 2011

  • Support has been added for new model.
  • A function was added to allow downloading data by group or for all groups.
  • A function was added to the [Beep] settings, to allow turning off only sound for button operation.
  • Revised to display a message if the clock settings have not been made when the power is turned ON.
  • Revised so that if a Remote Unit is already in a condition that meets criteria for a warning when the RTR-500DC starts monitoring via wireless communication, that warning status will be recognized and a warning will be issued.
  • Fixed an error that occurred while communicating with a PC wherein multiple operations were carried at the same time, such as turning ON/OFF the RTR-500DC and Remote Unit communication, that resulted in optical communication or menu operation being inoperable.
  • Fixed a problem that caused the Remote Unit to display the data in Celsius regardless of the unit setting when recording was started from the RTR-500DC via wireless communication.
  • Fixed an error that occurred when the RTR-500DC used Immediate Recording for the RTR-574 via wireless communication, whereby the time of downloaded data (recording start time) was a few seconds off.

Ver. 1.1 March 11, 2011

  • An error was corrected that occurred when downloading data via optical communication, whereby if you pressed the button to turn off the RTR-500DC, optical communication could not be carried out even after having turned on the power.
  • An error was corrected that occurred when the recorded data stored in the RTR-500DC exceeded 128 data sets and data stored after that could not be selected correctly for graph display.

User Agreement


  1. Although T&D Corporation has carried out operational tests on T&D Graph, hereafter referred to as "the software", we cannot guarantee that all operations will work properly under all conditions.
  2. T&D Corporation shall not accept any responsibility for any damage whether direct or indirect that results from the usage of the software.
  3. Specifications of the software may be subject to change and service may be terminated without advance notice to the user. In such a case T&D Corporation shall not be responsible for any damages whether direct or indirect from the inability to use the software.
  4. T&D Corporation has no obligation to correct any defects found in the software.


  1. All copyrights for the software, including all of the programs and all related documents, are the sole property of T&D Corporation.
  2. The software is for use free of charge. Redistribution is permitted as long as it is to others for non-profit. In this case, all terms and conditions as written in the above disclaimers automatically transfer and hold true and valid for the party to which the program was redistributed. Please note that if you wish to commercially redistribute the program please contact your local distributor or T&D representative.
  3. The reprinting or redistribution for commercial purposes whether in part or in whole, in magazines or as a part of any product is strictly forbidden without the expressed consent of T&D Corporation. Any inquiries concerning commercial redistribution should be directed to the Sales Department of T&D Corporation.
  4. Please do not attempt to make any changes or modifications to the software.
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