Glossary
Glossary-16
PLC S7-300, CPU Specifications CPU 312 IFM to CPU 318-2 DP
A5E00111190-01
Time-of-day interrupt
Interrupt, time-of-day
Token
Access right on bus
Transmission rate
Rate of data transfer (bps)
User memory
User memory contains Code/Data blocks of the user program. User
memory can be integrated in the CPU, on Memory Card or Memory modules.
The user program, however, is always processed from CPU main memory.
User program
SIMATIC differentiates between the CPU operating system and user
programs. The latter are created with the Programming Software STEP 7 in
the possible Programming languages ( FUP, STL) and stored in code blocks.
Data are stored in data blocks.
Ungrounded
Having no galvanic connection to ground
Varistor
Voltage-independent resistor
Watchdog Interrupt
Interrupt, Watchdog
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