Siemens SIMATIC Rack PC 547B, Руководство по эксплуатации, Страница: 131 / 136

Glossary
SIMATIC Rack PC 547B
Operating Instructions, 12/2007, A5E01127519-02
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ROM
Read-Only Memory ROM is a read-only memory in which every memory location can be
addressed individually. The programs or data are permanently stored and are not lost in the
event of a power failure.
SCSI interface
Small Computer System Interface Interface for connecting SCSI devices such as hard disk
drives or optical drives.
Session at once
In session at once, the CD can be written to both with an audio session and a data session.
The two sessions are written to at once (as in disc at once).
SETUP (BIOS Setup)
A program in which information about the device configuration (that is the configuration of
the hardware on the PC/PG) is defined. The device configuration of the PC/PG is preset with
defaults. Changes must therefore be entered in the SETUP if a memory expansion, new
modules or a new drive are added to the hardware configuration.
STEP 7
Programming software for the creation of user programs for SIMATIC S7 controllers.
Track-at-once
In track-at-once recording, a CD can be written to in bits in several sessions if the CD was
not closed.
Troubleshooting
Error cause, cause analysis, remedy
V.24 interface
V.24 is a standardized interface for data transfer. Printers, modems, and other hardware
modules can be connected to a V.24 interface.
Warm restart
The restart of a computer after a program was aborted. The operating system is loaded and
restarted again. The CTRL+ ALT+ DEL hotkey can be used to initiate a warm restart.