Siemens Automation System S7-400 - Manual (Page 216)

Glossary
Glossary-8
Automation System S7-400 Hardware and Installation
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L
Load Memory
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.
Contains the complete user program during runtime, the comments and the
symbolic system, additional special information which allows decompilation of the
user program, and all module parameters.
Local Data
→ Data, Temporary
Logic Block
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
Manufacturer--specific interrupt
Can be generated by a DPV1 slave. The DPV1 master responds with a call of
OB57.
For detailed information on OB57, refer to the “System Software for S7-300/S7-400
System and Standard Functions” reference manual.
Measuring Range Submodule
Measuring range submodules are plugged onto the analog input module for
adapting to various measuring ranges.
Memory Card
Memory cards are storage media in credit-card format for CPUs and CPs. They are
available as RAM or FEPROM.
Module Parameters
Module parameters are used to set the module reactions. A difference is made
between static and dynamic module parameters.