Siemens PANEL PC 877 Benutzerhandbuch

 

SIMATIC Panel PC 877 
Operating instructions, Release 07/2006, A5E00877780-01 

Glossary-1

 

Glossary 

ATAPI CD–ROM Drive 

AT-Bus Attachment Packet Interface (connected to AT bus) CD-ROM drive 

Automation device (AG) 

The programmable logical controllers (PLC) of the SIMATIC S5 system consist of a central 

controller, one or more CPUs, and various other modules (e.g. I/O modules). 

Automation system (AS) 

The programmable logical controllers (PLC) of the SIMATIC S7 system consist of a central 

controller, one or more CPUs, and various I/O modules. 

Backup 

Duplicate of a program, data carrier or database, used either for archiving purposes or for 

the protection of vital and non-replaceable data against loss when the working copy is 

corrupted. Some applications automatically generate backup copies of data files, and 

manage both the current and the previous versions on the hard disk. 

Baud 

Physical unit for the step speed in signal transmission. Defines the number of transferred 

signal states per second. With only two states, one baud is equivalent to a transmission rate 

of 1 bps. 

BEEP code 

If the BIOS detects a boot error, it outputs an audible warning based on the current test 

result 

Boot diskette 

A diskette that contains a boot sector and an initial loader for the operating system. This can 

be used to load the operating system from the disk. 

Booting 

Start or restart of the computer. During booting the operating system is transferred from the 

system data carrier to the work memory.