SBC PCD3 Series - Page 132

Saia-Burgess Controls AG
Hardware manual for PCD3 series │ Document 26-789 ENG19│ 2018-06-29
Appendix
A
A-8
Glossary
RAM RandomAccessMemory→digital,volatileRAMofthecomputer.
Losesitsdataintheo󰀨state.
Resources Resources→Inputs/outputs,ag,register,counter,timer,etc.
Restore Load saved data from the backup data carrier.
RIO RemoteInputOutput→Inputs/outputsonmodulecarriersthat
canbeaccessedbytheCPUviaprobus/ethernetlines.
ROM Readonlymemory→Digitalmemorywhichkeepsitsdatainthe
o󰀨state.
SD card SecureDigitalMemoryCard→Digitalmemorywhichkeepsits
dataintheo󰀨state.
Sink operation Ground switching with DC
Slot Slot for I/O, communication and memory modules.
Source operation Plus switching with DC
Source text or source code With an ASCII editor created (original) program, therefore no
word processing program.
Word processing programs include characters for bold text etc.,
which a compiler might misinterpret.
SPM Saia PG5
®
Project Manager, main program of the Saia PG5
®
software package.
SRAM Static Random Access Memory
SuperCap Electronic component (capacitor) that can store electrical energy.
Preservation of memory contents and clock function after
switchingo󰀨thepowersupplyforafewhourstodays.
Terminated Electricalreectionsatthelineendsarepreventedusing
termination (e.g. with terminating resistors).