If you want to login over RS232 you have to stop the firmware of the controller. How this is done is explained below.
1) Choose “Install Firmware”
![](https://montrol.com.tw/wp-content/uploads/2012/03/1.png)
2) Now take the script “StopFirmware”:
![](https://montrol.com.tw/wp-content/uploads/2012/03/2.png)
3) Before choosing the device port please switch off the 24VDC power supply of the controller.
4) Then press Ok and switch on the 24VDC power supply. Attention: you have around 2 seconds after pressing Ok to switch on the 24VDC power supply!
![](https://montrol.com.tw/wp-content/uploads/2012/03/4.png)
5) The following message shows, that you are now able to login.
![](https://montrol.com.tw/wp-content/uploads/2012/03/5.png)
6) You can now login as usual and change settings. As soon as you press reboot in LinMot-Talk the connection will be lost again.