Siemens SIMATIC S7-1500 Operating Instructions Manual page 101

TCP
Transmission Control Protocol: Enables transmission of data packets ("messages") if both
nodes support RFC 1006.
Time-of-day synchronization
The ability to broadcast a system standard time from a single source to all devices within the
system so that they can set their own clocks to the standard time.
TPM
Trusted Platform Module: The hardware can be expanded to include a TPM. The TPM
assigns a unique identifier to the device and expands its safety functions.
UDP
User Datagram Protocol: Enables transmission of data units.
UPS
Uninterruptible power supply: A UPS ensures the power supply in case of brief disturbances
in the power network.
Warm restart
The controller executes OB 100 before the start of the free scan cycle (OB 1). A warm restart
resets the distributed I/O inputs and puts the distributed I/O outputs into a pre-defined safe
state. A warm restart saves the current value of the retentive memory areas of bit memories,
timers, counters, etc.
Web server
The Web server is used to monitor the CPU via the Internet or via your company Intranet.
This approach lets you carry out evaluations and diagnostics even at great distances.
Messages and status information are visualized on HTML pages.
Work memory
Memory area (RAM) allocated for the blocks used at runtime.
CPU 1505SP (F) Ready4Linux Version 2.7
Operating Instructions, 05/2019, A5E46864285-AA
Glossary
101