SBC PCD1.M2220-C15 - Glossary

Hardware manual PCD1.M2220-C15 │ Document 27-640 – Version ENG03 │ 2020-03-25
Saia-Burgess Controls AG
Glossary
Appendix
A-8
A
A.5 Glossary
AWL Statement list (programme code line for line)
Backup Data backup on second data carrier.
Basic address First numeric address of the IO module slot.
Bu󰀨er battery Retention of the memory content and continuation of the clock
after the power supply has been switched o󰀨
Builder Combines di󰀨erent work steps to load a programme if it is OK in
the PCD.
Compiler A compiler is a program that complies the source text of a program
in a string that can be understood by the target computer.
CPU Central Processing Unit Here the main housing with central unit
is designed for the Saia PCD
®
family.
Device Device → controller (part of a project in the PG5
®
Project Manager).
Download Fig. “DnLd” → Save data in PCD
Element Here, the inputs and outputs, ag, register, counter, timer, etc. are
designed for the Saia PCD
®
family.
Flash memory Digital, non-volatile memory. It retains its data without any current.
FRAM Digital, ferroelectric, non-volatile memory. It retains its data with-
out any current.
IL Instruction list (AWL programme code line for line)
Linker After the compiler has done its work, the linker merges the indi-
vidual data for a programme.
LIO (Local Input Output) Inputs/outputs on the CPU board (on-board).
Media This indicates inputs/outputs, ag, register, etc. in the PCD family.
Media mapping Media mapping is the software assignment of digital and ana-
logue I/O electronics to ags and registers using a list.
Module Carrier cards for input/output electronics with suitable connection
technology.
Module holder This species CPU, LIO or RIO devices that can hold IO modules.
Motherboard Main board (CPU)
NT New technology → subsequent generation of the rst PCD gen-
eration.
On-Board Denotes as much as permanently installed “on the CPU mother-
board”.
Parse A parser is a program which, in computer engineering, is respon-
sible for the decomposition and conversion of any input (text, e.g.
AWL) into a format useful for further processing.
PGU Programmable Unit
PLC Process Logic Controller
Port Interface description
PWM PWM stands for Pulse Width Modulation. Pulse width modulation
works with a constant pulse rate and a constant pulse amplitude,
only the pulse width is variable. Because the pulse rate is con-
stant, but the pulse width changes, the pulse duty factor changes.
With a PWM output, it is possible to output analog values without
expensive A/D converters.
RAM Random Access Memory → digital, volatile RAM of the computer.
Retains data without a power supply.