315-4PN33

You may also gain direct access to peripheral modules via the bus
from user application. The following types of data are available:
n Bytes
n Words
n Blocks
The bit memory is an area of memory that is accessible by means of
certain operations. Bit memory is intended to store frequently used
working data.
You may access the following types of data:
n individual Bits
n Bytes
n Words
n Double words
In your program you may load cells of the timer with a value between
10ms and 9990s. As soon as the user application executes a start-
operation, the value of this timer is decremented by the interval that
you have specified until it reaches zero.
You may load counter cells with an initial value (max. 999) and incre-
ment or decrement these when required.
A data block contains constants or variables in the form of bytes,
words or double words. You may always access the current data
block by means of operands.
You may access the following types of data:
n individual Bits
n Bytes
n Words
n Double words
2.3 CPU 315-4PN33
The CPU 315-4PN33 bases upon the SPEED7 technology. This sup-
ports the CPU at programming and communication by means of co-
processors that causes a power improvement for highest needs.
n The CPU is programmed in STEP
Ò
7 from Siemens. For this you
may use the SIMATIC Manager or TIA Portal from Siemens. Here
the instruction set of the S7-400 from Siemens is used.
n Modules and CPUs of the System 300S from VIPA and Siemens
may be used at the bus as a mixed configuration.
n The user application is stored in the battery buffered RAM or on
an additionally pluggable MMC storage module.
n The CPU is configured as CPU 315-2 PN/DP (6ES7
315-2EH13-0AB0 V2.6) from Siemens.
Bit Memory
Timers and counters
Data Blocks
Overview
VIPA System 300SBasics
CPU 315-4PN33
HB140 | CPU | 315-4PN33 | GB | 14-43 12