An einer USV-Schnittstelle muss ich mit dem Laptop neue Firmware laden. Dafür muss ich den Laptop (COM1-Schnittstelle) mit der seriellen Schnittstelle des Interfaces der USV-Anlage verbinden und auf dem Laptop alle Services, die COM1 belegen, terminieren. Wie finde ich heraus, welche Services die COM1-Schnittstelle blockieren?
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Um ein Hin und Her zu vermeiden, lege ich das Pozedere bei, welches ich ausführen muss. Die Frage die ich ursprünglich gestellt habe, bezieht sich auf Punkt 2:
2. Select a serial port on the computer and disable any service that uses that port.
3. Use the APC serial configuration cable that was supplied with the UPS to connect the UPS to the serial port on the computer (the cable number 940-0024 will be shown the cable connector head.)
4. Start Hyperterminal and you will be requested to enter a name and choose an icon for the new connection. Enter any name and choose any icon and click on the OK button.
5. A 'Connect To' dialog box will show. Select the serial COM port to which the cable (earlier described) is connected to from the bottom 'Connect using:' dropdown menubox and click on the OK button.
6. A Properties dialog window will show with Port Settings. The correct settings for the connection are: Bits per second: 2400, Data bits: 8, Parity: None, Stop Bits: 1, Flow control: None. Click on the OK button.
7. Press ENTER when you see the blank terminal screen and the User Name prompt will be displayed. Logon using apc as the username and apc-19200 as the password. This will tell the card to use 19200 as the Baud Rate.
8. Create a new connection with the same port settings given in step 6 earlier, but use 19200 as the baud rate this time.
9. Press ENTER when you see the blank terminal screen and the User Name prompt will be displayed. This time login using apc for the user name and the password.
10. Choose System (3) from the Control Console menu, then Tools (4), then File Transfer (6), then select XMODEM (1).
11. You will be asked to confirm this selection, type YES and press enter (the YES has to be in capital letters.)
12. You will now be asked to select a Baud Rate, choose 19200 (3) and press enter. You will be told to change the baud rate to 19200 and press enter, just press enter since you are already communicating at 19200.
13. The card will now wait for you to transfer the file. On the Hyperterminal menu, select Transfer, then Send File, then browse to the AOS BIN file (the one with the highest version) you want to upload. Make sure that you have the Protocol selected as Xmodem and click the Send button. You only have a short period of time (30 to 60 seconds) to initiate the file sending or the card will reboot itself if no file transfer has been started.
14. Once the file has completely uploaded the interface will automatically reboot. Please wait at least 60 seconds then press enter, you should get a User Name promt again, if not, wait a bit longer and try again.
15. Once the interface has rebooted again, login using apc as the username and apc-2400 as the password. The interface will now change back to the default baud rate of 2400. Close Hyperterminal.