Product(s) affected: DCN-CCU, DCN-WCCU, (not DCN-CCU2)
Version(s): all versions
Problem description:
Downloading firmware over the serial cable can be tricky, this document gives further information on the required equipment and settings for the serial connection and the system.
Solution:
The following are a list of potential solutions when connecting to the CCU or WCCU to upgrade the system firmware:
- Cable from the PC to the CCU/WCCU must be a 9 pin DB9 null cable. A three pin only cable (2,3,5) will not work.
- Check your serial comm port setting on your pc and compare it to the comm port setting on the Download and Licensing Tool (DLT). Communication port settings must match.
- Make sure the switch settings (S500) for the CCU/WCCU are set to default (Full) for RS232 port 1. S500 switch 1=On, 2=Off, 3=On, 4=On, (5-8 are set for RS232 port 2).
If the system is communicating on the RS232 port and the CCU/WCCU is freezing up (failing) during a download, then try the following switch setting.
- To force a firmware download to the CCU/WCCU, set switch S600-8 = On. This will put the CCU/WCCU in boot mode and enables a new firmware upload (in case a download failed). Once the firmware download is complete, change the switch S600-8 to Off.
Note: Refer to the manual (IUI_DCN_en.pdf) for version 3.1x for details where to find the DIP switches mentioned in this article. The manual is found on the DCN-NG software ISO.
