Operating Instructions

Siemens Building Technologies, Inc. 7-1
7
Troubleshooting
Chapter 7 provides an overview of how to troubleshoot communication problems between the
FIX workstation and the System 600 APOGEE Building Level Network (BLN). An
understanding of the system components will be helpful in troubleshooting communication
problems.
Chapter 7 discusses the following topics:
• System Components
• Run Time Information
• Common Problems
• Using the NT Event Viewer
• Using the Alarm History Window
• Registry Entries
System Components
Database Dynamos
System 600 APOGEE Database Dynamos (loadable blocks) are similar to PLC “register”
block types (AR, DR) in the sense that field updates to or from the System 600 APOGEE
network points are communicated immediately, rather than waiting for SAC to scan the
blocks. In addition, System 600 APOGEE blocks are primary blocks that can serve to
schedule “chains” of block operations.
Communication between the blocks and System 600 APOGEE equipment takes place
through three additional layers of software components (MsgManager service, AsyncSvc
service and LocalNet driver) and a DigiBoard serial card.
DigiBoard Serial Card
The DigiBoard is a multi-port serial communications adapter. It provides dedicated hardware
assistance for low level System 600 APOGEE network functions. thereby processing
demands on the operator workstation.