Operating Instructions

Table Of Contents
Glossary
| 79
Siemens Industry, Inc.
Owner's Manual
588-781
Building Technologies
2018-10-01
P
Plain Old Telephone Service (POTS): Acronym for the standard telephone service that
is used in most homes. Communication speed is generally restricted to 52K bps.
point condition: State of a point such as normal, alarm, alarm-by-command, failed,
operator disabled, or proofing.
R
Read Only Memory (ROM): Non-volatile, permanent, but field-programmable memory
that stores the operating system of the field panel. ROM stays intact even in the event
of a power surge, a power loss, or failure of the battery backup.
S
service box: Component that receives the line power and converts it to 24 Vac for the
field panel.
T
telnet: Program that runs on top of TCP/IP, it is the Internet standard protocol for
remote login.
text-based terminal: Operator terminal that displays and accepts text only.
To-Fault: A BACnet event indicating that the BACnet object (point) has transitioned to
the Fault state from some other state for the recipient or device. A BACnet object
mayor may not require acknowledgement of this event by a user.
To-Normal: A BACnet event indicating that the BACnet object (point) has transitioned
to the Normal state from some other state for the recipient or device. A BACnet object
mayor may not require acknowledgement of this event by a user.
To-OffNormal: A BACnet event indicating that the BACnet object (point) has
transitioned to the OffNormal state from some other state for the recipient or device.
OffNormal states in BACnet are: OffNormal, high-limit, low-limit, and life-safety-alarm.
A BACnet object may or may not require acknowledgement of this event by a user.
tombstone: Remnant or memento of a deleted record that is retained for a finite
amount of time in a node’s replication database. Tombstones are used to keep track of
locally deleted records that must be deleted from replication partners during future
global data replication sessions.
totalized value: Sum of information (in hours or minutes) about logical points such as
run time, total volume, and degree days.
Transmission Control Protocol/Internet Protocol (TCP/IP): Protocol suite developed by
the U.S. Department of Defense to link dissimilar computers across different kinds of
networks. TCP/IP is the transport protocol employed by the Internet and is commonly
used on Ethernet networks.
U
unbundle: Describes the action of entering a point that resides in an equipment
controller's database into the field panel's database so that it can be monitored and
controlled from the field panel.
Unicast: Destination IP address that represents a single interface to a single system. IP
datagrams sent to a unicast address are sent to a single interface on a single IP host.
User Datagram Protocol (UDP): TCP/IP protocol that provides simple datagram
services. UDP is a connection-less mode protocol that is layered on top of IP. UDP
does not guarantee delivery and is not used for applications that require
acknowledgements or re-transmission.