Glossary
Glossary-8
S7-400 and M7-400 Programmable Controllers, Installation Manual
C79000-G7076-C424-01
K
The keyswitch is the mode selector switch of the CPU. The keyswitch
is operated with a key which can be withdrawn.
L
The load memory is part of the S7-400 CPU. It contains objects
created by the programming device. It can be either a plug-in memory
card or an integrated memory.
Power supply for the signal and function modules and the process I/O
connected to them.
³ Data, Temporary
In SIMATIC S7, a logic block is a block that contains part of the
STEP 7 user program. The other type of block is a data block which
contains only data.
M
An expansion of the M7-400 programmable controller. It is connected
to the CPU via an ISA bus interface and contains a floppy disk drive
and a hard disk drive.
Measuring range submodules are plugged onto the analog input
module for adapting to various measuring ranges.
Memory cards are storage media in credit-card format for CPUs and
CPs. They are available as RAM or FEPROM.
³ Keyswitch
Module parameters are used to set the module reactions. A difference
is made between static and dynamic module parameters.
Keyswitch
Load Memory
Load Power
Supply
Local Data
Logic Block
Mass Storage
Module
Measuring Range
Submodule
Memory Card
Mode Selector
Switch
Module
Parameters
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