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Siemens Building Technologies
Commissioning instructions OZW775 V2.01
CE1C5663en
HVAC Products
Recommended commissioning
22.06.2012
2.4.2 Update firmware
You must update the firmware from CF card OZZ7CF if you want to use a central
communication unit V1.0 to communicate via Ethernet and/or use it as web server.
Updating the firmware is not necessary for central communication unit V2.0.
You must order the CF card OZZ7CF with the latest firmware version (and the latest
web server data) separately.
Do not switch off AC 24 V operating voltage while updating!
Voltage interruption set an undefined state for the central communication unit OZW775
that only Siemens Building Technologies (HQ Zug, Switzerland) is able to undo.
See also the supplied installation instructions G5663xx (multi-lingual).
Insert the CF card in the lower slot "CF Card Config/Report".
Press button "long" >4 seconds and simultaneously press "Ack",
"Config", "Modem" and "Report" to start updating.
Updating takes several minutes.
Note:
LED "CF Cards" flashes and goes to the
permanently lit state. The next LED flashes and then goes to the
permanently lit state until all four LEDs are lit. Automatic restart of the
central communication unit follows this process.
Updating is completed when LED "Run" is lit.
Note:
After updating, the central communication unit is in
commissioning mode = On (Commissioning mode = On
does not correspond to normal mode).
5663Z15
1
Insert CF card
face up
566
3Z16
Push all 4 buttons
simultaneously >4 sec.
2
56
63Z
17
After restart OZW775 wait
until LED "Run" lights up
3
The firmware update procedure is only indicated via the LEDs.
Important notes
Update firmware
G1
Note
G1