Glossary
Annex
A-4
A
A.3 Glossary
Backup
Datas save on media
Base address
See chapter 2.1.3 “Addressing” → “Plug-in Input
and Output Modules”
Compiler
A compiler (from the word compile, to collect)
is a program which translates the source text
(source code) of another program, which is provided
in a specific programming language, into a character
sequence that is understandable for the computer.
CPU
Central Processing → Unit Housing with central unit,
the heart of the PCD
Device
PLC (Bezeichnung im Saia PG5
®
Project Manager)
Download
Abb. “DnLD” Save data to PCD
Element
e.g. PLC input, PLC output, flag, register, etc.
Linker
After the compiler has done its work, the linker
combines the individual files to create a program.
LIO (Local Input Output)
Inputs/outputs on the CPU (on-board) or connected
through the I/O bus (not PCD1) on the CPU.
Media
Media refers to inputs/outputs, flags, registers, etc.
in the PCD family.
Media mapping
Assignment of digital and analogue I/O values to flags
and registers.
Modules
Carrier cards for input/output electronics
Module holder
CPU, LIO or RIO devices which can accommodate
the aforementioned modules.
Motherboard
Main circuit board (CPU)
IL
Instruction list ( PCD program code)
NT
New technology, means the PCD generation following
the first generation
On-board
means mounted “on the CPU circuit board”
Parsing
A parser is often a type of compiler, which checks
the correct syntax of the program.
PGU
Programmable Unit → programming unit
PLC
Process Logic Controller
Port
Interface designation
Buffer battery
Retention of memory content and continuation
of the clock after a power supply shut-down.
PWM
Pulse-width modulation (pulse-width modulation
is a type of modulation in which a technical
measurement (e.g. electric current) switches between
two values).
Restore
Saved datas load from media
Resources
In this case inputs or outputs,
RIO (Remote Input Output)
Inputs/outputs on the CPU (on-board) or connected
through the I/O bus on the CPU.
Slot
Slot for plug-in
SPM
Saia PCD
®
Project Manager, main program of the Saia
PG5
®
package
Hardware Manual PCD1.M0160E0 │ Document 27-622
|
Version ENG04 │ 2018-08-20
Saia-Burgess Controls AG
