User Manual

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Building Technologies Operating Instructions for ACS Operating and ACS Service CE1U5640en
HVAC Products 2 Processes Dec. 1, 2005
2.3.2 Prepare the connection to the plant
Communication with the central units can take place either directly or via modem.
In the case of a direct connection, a standard null modem or standard USB
cable is required between central unit and PC.
Direct connection for plant supervision:
Install ACS prior
to connecting the OZW775 central communication unit to the PC.
When, via USB, the central communication unit is connected to the PC for the first
time, Windows detects the new hardware and shows message Found New
Hardware.
Windows XP:
Then, the Found New Hardware Wizard is automatically started. Select Install the
software automatically (recommended) and confirm your choice by clicking the
Next > button. Installation of USB driver Siemens OZW USB Connection is started.
Confirm the warning in the Hardware Installation dialog by clicking the Continue
Anyway button.
Windows 2000:
Confirm the question Do you want to continue the installation? in dialog Digital
Signature Not Found by clicking the Yes button. Installation of USB driver Siemens
OZW USB Connection is started.
Installation of the USB driver for the central unit is completed by confirming with the
Finish button.
If automatic installation is not successfully completed, you can also install the driver
manually by using the hardware assistent. During the installation of ACS, the driver
was copied to the harddisk under
C:\ACS\CommServer\ACSNet\RNDIS\Siemens_OZW.inf.
Direct connection