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S7-200 Schematic ( PDF Datasheet ) - Siemens

Teilenummer S7-200
Beschreibung Micro System SIMATIC
Hersteller Siemens
Logo Siemens Logo 




Gesamt 30 Seiten
S7-200 Datasheet, Funktion
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www.DataSheet4U.comTwo Hour Primer
Edition 01/2000
www.DataSheet4U.com






S7-200 Datasheet, Funktion
Chapter
logo
Chapter
Primer symbols
Chapter header
- New, current
Certain symbols and text highlights are used frequently in the 2-hour primer. Their meanings are
explained on this page.
Check out the page header first! Each page has an identical page header design. The blue head-
ing in large letters indicates the current sub-header of the chapter. The area "New" in the right-
hand side of the header shows the contents of the preceding pages with the contents of the cur-
rent page highlighted in blue followed by the contents of the following page(s).
Text on a gray background prompts you to some action such as an input.
8
8 2x
©
Ë
F2
$
?
Í Menu
This symbol shows you that the left mouse key must be clicked once for
an action (e.g. mark field).
This symbol shows you that the left mouse key must be double-clicked for
an action.
Here you are prompted to press the ENTER (or RETURN) key on your
keyboard.
This indicates that you can select list points provided onscreen using the
mouse or optionally the keyboard (function keys, arrow keys).
This means you must press function key "F2" (function keys F1 ... F12 are
available). You will discover that, despite user-friendly mouse operation,
you can work faster with the keyboard in certain cases.
In combination with a page reference, you will find here further details on
a specific topic.
At these points, you will be requested to make entries in text fields on the
screen, or you will be reminded that in your own projects you should make
notes here.
A menu point on the screen is activated step-by-step (heading, sub-head-
ing) with the left mouse key.
Revision
Latching
Pulse-Oper-
ated Switch
Off-Delay
Timer
Sequencer
Appendix
3

6 Page









S7-200 pdf, datenblatt
Revision
The PLC Cycle (1)
What you know already...
- A Few Words of Revision
- Here are the Bits
- Current Flow in the Ladder Diagram
- The PLC Cycle
Inputs
PII = Process-image input table (input register)
Network 1 Motor on/off
STEP-7 program
• Bit memories
• Timers
• Counters
• .........
Network 2 Direction rever-
sal of rotation
PIQ = Process-image output table (output register)
Outputs
All SIMATIC programmable controllers usually work in a cyclical manner. In this cyclical
operation the switch statuses are read at the inputs and stored in the process input
image (PII). This information is subsequently used to feed and process the control pro-
gram.
Process Input
Image: PII
Revision
Latching
Pulse-Oper-
ated Switch
Off-Delay
Timer
Sequencer
Appendix
9

12 Page





SeitenGesamt 30 Seiten
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