Glossary-8
PG 760 Programming Device
C79000-G7076-C761-01
RAM (Random Access Memory) is a read/write memory in which every
memory location can be addressed individually and its contents changed.
RAM is used to store data and programs.
ROM (Read Only Memory) is a memory in which every memory location
can be addressed individually. The stored programs and data are permanently
programmed at the factory before delivery and are not lost in the event of a
power failure.
Real-Time Clock
Small Computer System Interface. Interface for connecting SCSI devices
(hard disk drives, CD-ROM drives).
Data is transmitted one bit at a time via a serial interface (port); serial
interfaces are therefore slower than parallel interfaces.
A program in which information about the device configuration (for
example, the configuration of the programming device’s hardware) is
defined. The device configuration of the programming device is preset with
defaults. Changes must therefore be entered in the SETUP if a memory
extension, new modules, or a new drive are added to the hardware
configuration.
Memory submodules in credit-card format for SIMATIC S5 to SIMATIC S7
which are programmed with the PG 760 and can be plugged into an S5 or S7
programmable controller.
Bus system on the basis of the PROFIBUS standard. Components of the
SIMATIC S5 and S7 series (for example, programming device,
programmable controller, remote I/O) can be networked directly using
SINEC L2.
Bus system on the basis of the ETHERNET standard. Components of the
SIMATIC S5 and S7 series (for example, programming device,
programmable controller, remote I/O) can be networked directly using
SINEC H1 interface modules.
R
RAM
ROM
RTC
S
SCSI Interface
Serial Interface
SETUP
SIMATIC Memory
Cards
SINEC L2
SINEC H1
(ETHERNET)
Glossary