BAC-19xxxx FlexStat Application Guide
16 AG200824A
Communication Issues
(MS/TP) Data Port Communication Issues
NOTE:
For Ethernet-enabled models, the EIA-
485 data port is not supported.
• See the
•
Reduce the Max Master number down to the
minimum needed for that network.
• See also
Ethernet/IP Network Communication Issues
• Restart the FlexStat.
• Check communication settings.
• Use a
BAC-5051E router to check route status
for network issues such as duplicate network
numbers.
MS/TP Network Communication Issues
• Check the phasing of the power and network
• Check
MAC address and device instance
numbers (especially for duplicate numbers on
the network).
• Check that
EOL
switches are fully latched in
the correct positions (see the
).
• Check the baud rate setting (which should be
the same on all the controllers on the network).
•
Check the Max Master setting in a
configuration tool. It should be (just) higher
than the highest numbered controller.
•
Ensure wiring is correct. See
• See
Planning BACnet Networks (Application
.
• Check for ground loops. See
Troubleshooting Ground Loops Application
.
Application Index drop-down menu, click
Save
Changes
, right-click the FlexStat in the Network
Manager, select
Reinitialize Device....
Restore
to the original application in the same manner.
NOTE:
After the application has been changed,
most settings are returned to their
defaults. Configure them as needed.
TROUBLESHOOTING
Alarm Issues
Alarm, (False) Fan Status Fail
•
Check configuration. Be sure the Fan Status
option is not enabled when there is no sensor/
switch for it.
• Check fan status input wiring.
•
Check the connected fan status sensor/switch.
•
Using KMC software, check that BI6 (or
equivalent fan status binary input) is not
configured as “Out Of Service.”
Alarms, Other
NOTE:
Use KMC software to create any
additional alarms—see the Help system
in software for more information.
Back-Up Issues
NOTE:
Backing up the existing settings and
firmware image before or during the
upgrade process is recommended
practice.
•
Use KMC software to back up FlexStats. See
the software documentation.
• See also