Siemens SIMATIC S5-95F User Manual

S5-95F Failsafe Mini PLC S5-95F
1.3 S5-95F Programming and Parameterization Software
Programming Instead of Wiring
Conventional controls using relays or contactors are hardwired. Their functions are implemented by
wiring the switching elements. If the control task changes, time-consuming modifications of the
wiring have to be made.
With the S5-95F, the sensors and actuators are connected to the programmable controller. The
control task is written in a program where the only thing you do is to evaluate the signal states of the
sensors and actuators connected. Modification of functions, testing and startup are thus simplified
considerably.
STEP 5 Programming Language
This language enables the first-time user to become quickly familiar with PLC technology. All
SIMATIC S5 PLCs, including the S5-95F, can be programmed using the STEP 5 language. STEP 5
is easy to comprehend and makes developing of programs user-friendly, flexible and economical.
STEP 5 offers three different methods of representation:
• Statement list (STL)
Uses mnemonics for statements
• Control system flowchart (CSF)
Uses logic representation
• Ladder diagram (LAD)
Similar to a circuit diagram
Programming
Programming of the S5-95F means that the redundant structure is not taken into account (simulation
of single-channel design).
This means that the 2-channel failsafe I/Os are addressed in the STEP 5 program only under one
address.
Parameter Assignment
The man-machine interface (MMI) of the S5-95F is parameterized like a single-channel controller.
The corresponding parameters are set in DB1 of the COM 95F parameterization software.
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Siemens SIMATIC S5-95F Specifications

General

Brand	Siemens
Model	SIMATIC S5-95F
Category	Controller
Language	English