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+--- Forum: Velbus (https://www.comfortforums.com/forum-88.html)
+--- Thread: Velbus UCM D4 ERROR (/thread-2080.html)
- bs85 - 12-10-2010
Hi,
I have just received a Velbus UCM.
I have a problem that the D4 LED is constantly flashing and writing to the UCM eeprom always fails at 64 percent
Any Ideas?
Comfort II Ultra 5.204
Ethernet UCM 5.200
Velbus UCM 5.220
Comfigurator 3.2.4.0
- slychiu - 12-11-2010
According to the UCM/Velbus manual, see https://www.cytech.biz/ucmvelbus_manual.html the D4 LED constantly flashes when the U2 EEPROM is not inserted. Can you check if there is an IC in the U2 socket?
- bs85 - 12-11-2010
Yes there is an IC in the U2 socket an ATMLU946
When on Comfugurator in the velbus settings if you go into monitor mode then activate a velbus device the D4 LED goes out.
When trying to write to the velbus eeprom it stops at 64 percent for approx 25 seconds and then errors.
Create a new project in Comfigurator and read from the velbus eeprom which it completes OK and the devices from a failed write are listed.
- slychiu - 12-13-2010
Sorry it appers that the wrong eeprom was inserted in the U2 socket. It should be a 256K eeprom but a 64 K eeprom was used instead, leading the the Error LED blinking
Can you send your name, address and contact number by Private Message or to support@cytech.biz so we can send a new U2 EEPROM
- bs85 - 12-13-2010
PM sent
- bs85 - 12-22-2010
Received replacement EEPROM and now its working.
Thanks