Glossary
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SICAM RTUs, SICAM MIC System Description
MC6-054-2.00, Edition 07.2014
Periodical transmission
Exchange of a process signal or a derived information between the peripheral element and the higher-
level open-/closed-loop control function.
Peripheral element
The peripheral element is a supplementary system element for process data acquisition and/or control of
actuators. It comunicates via the Ax-PE-Bus with the basic system element.
PLC
Programmable Logic Controller
PRE
Protocol Element
Programmable logic controller
Digitally operating electronic system, designed for use in an industrial environment, which uses a pro-
grammable memory for the internal storage of user-oriented instructions for implementing specific func-
tions such as logic, sequencing, timing, counting and arithmetic, to control, through digital or analog inputs
and outputs, various types of machines or processes. Both the PC (PLC) and its associated peripherals
are designed so that they can be easily integrated into an industrial control system and easily used in all
their intended functions (IEC 61131-1, chapter 2.50).
Protocol element
The protocol element is a supplementary system element for communication with other automation units
or control systems. It comunicates via the internal bus (ZBG-Bus) with the basic system element.
PSR
SICAM TOOLBOX II configuration tool
PSTN
Public Switched Telephone Network
PT 100
Temperature-dependent resistance element with PT 100 characteristic
Q
R
Routing
Routing of data streams: Messages are "routed" from their sources to their sinks. This works similar to di-
recting railroad cars by setting track switcher. Messages contain data point related information.
Retained variables
Variables in a non-volatile memory. The value of the variable is retained during a power failure.
Router
Network device for connecting two independent network segments as internet and LAN
RS-232
Standard for serial data transmission
RS-485
Standard for serial data transmission
RTS
Request to Send (switch on transmit device), control line of an RS-232 interface
S
SD card
Secure Digital Memory Card; up to 2 GB storage capacity
Содержание SICAM MIC
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