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Important notes
Update firmware
G1
Note
30/148
Siemens Building Technologies
HVAC Products
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).
G1
Push all 4 buttons
2
simultaneously >4 sec.
The firmware update procedure is only indicated via the LEDs.
Commissioning instructions OZW775 V2.01
Recommended commissioning
Insert CF card
1
face up
After restart OZW775 wait
3
until LED "Run" lights up
CE1C5663en
22.06.2012
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