Siemens CP-8000 User Manual page 608

Glossary
DI
ž Double-point Information
Digital input
ž Binary input
Digital output
ž Binary output
DMS
Digital Multiplex System
DO
ž Digital output
Double command
A pair of commands each of which is used to cause operational equipment to change to one of two de-
termined states.
Double-point information
Monitored information represented by two bits characterizing two determined states and two states of op-
erational equipment.
DSR
Data Set Ready; control line of an RS-232 interface
DTR
Data Terminal Ready; control line of an RS-232 interface
E
EM II
Confiugration tool of SICAM TOOLBOX II (Engineering Manager II)
Ethernet
Wired local network according to IEEE 802.3
External error
Error that is detected through monitoring the information from sensors and actuators.
Can concern the I/O Master Module, the wiring, and sensors or actuators, insofar as the source of error
can not be unequivocally localized to the I/O Master Module; otherwise it would be an internal error.
Externally managed parameter
Parameter that is required on a module (e.g. supplementary module), however, is managed and stored on
the higher-level module
F
FAT
File system on storage media (File Allocation Table); FAT16 up to 2 GB, FAT32 as of 32 GB capacity
Fieldbus interface processor
The fieldbus interface processor serves for the serial connection of SICAM RTUs systems to a Profibus
(Profibus Master); Profibus Slaves are connected acc. to EN 50170-2
FIP
ž Fieldbus interface processor
Firewall
Blockage of a local network or computer against not allowed access from a supraregional network. Func-
tion for the filtering of data from the internet for the protection against invaders and malicious software.
Firmware
Program that is not changeable by the user, that adds a predefined and parameter-settable functionality
to the hardware
FPU
Floating Point Unit
FUD
ž Function diagram
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Unrestricted SICAM A8000 / CP-8000 • CP-8021 • CP-8022 Manual
DC8-037-2.02, Edition 10.2017