Siemens SIMATIC Manual page 52

Introduction
The sample in this manual takes you through four steps, showing you how to com-
mission a fully functional application. You are going to get acquainted with the basic
hardware and software functions and learn how to transfer data via serial interface.
The references to the manual should give you a first overview of the information it
contains.
It should take no more than one or two hours to work through this sample, depen-
ding on experience.
Prerequisites
Condition are that:
S You have an S7-300 station, consisting of a power supply module and a CPU
31C-2 PtP. The serial connection is established via the 15-pole sub-D socket at
the right side.
S STEP 7 (>= V5.1 + Servicepack 2) is correctly installed on your PG.
S The sample projects are available, either on your CD or you have downloaded
them from the Internet.
S You have created a project for the S7-300 station.
S The PG is connected to the CPU.
S You have prepared your connection partner for data transfer and connected the
required patch cord.
S The CPU is correctly connected to a power supply.
Warning
!
Depending on the field of application, your S7-300 as component in plants and
systems requires special attention relating to specific rules and regulations.
Please pay attention to current regulations on safety and for the prevention of acci-
dents, e.g. IEC 204 (EMERGENCY–OFF devices).
Serious injury as well as damage to machines and appliances is to be expected if
you neglect these regulations.
Warning
!
You risk contacting live wires if the PS 307 power supply module is switched on or
if the power line of the PS is connected to mains.
Wire the S7-300 only after you have switched off power!
2
Automation System S7-300, Getting Started – PtP
A5E00105535-01