
Appendix F: Pass-through Mode
64 ManageUPSNET User Instruction Manual
Appendix F:
Pass-through Mode
The pass-through mode can be used for
Out-Of-Band access or local serial monitoring.
Both internal and external versions of the
ManageUPSnet adapter allow the re-use of the
UPS serial port for other utilities that need to
communicate serially with the UPS.
In pass-through mode, ManageUPS suspends
its conversation with the UPS and yields the
port to the external entity. If there is no activity
on the port for 2-4 seconds, ManageUPS takes
control of the port for its own use until a new
request enters from the external device.
If the external entity monopolizes the port,
ManageUPS will interrupt the session every
minute to update itself with UPS status
information. The interruption lasts less than one
second, after which the port is yielded again to
the external device.
A common external device may be a terminal or
Windows application requesting a private
session with the UPS either locally or via
modem for configuration adjustment or
diagnostics of the UPS.
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