Step 7 Lite, Step 7 and Step 7 Professional Differences

 

STEP 7 Lite

STEP 7

STEP 7 Professional
Configuring
PLCs

S7-300/C7

S7-300/S7-400/C7/WinAC

Modules

Digital, analog I/O, IFM
centralized only

Digital, analog I/O, IFM, FM, CP
centralized and distributed (DP)

Networking/communications

No

Time-driven, cyclic data transmission between automation components;
MPI, PROFIBUS or Industrial Ethernet

Distributed I/O

No

Yes

Alarm configuring (display->HMI)

No

Yes

Write/read to/from MMC

Yes, in CPU only

Yes, in CPU and direct on PG/PC
(updating of PLC operating system possible)

Export/import

Program, symbols

Program, symbols, hardware configuration

Documentation function

Included

Included - S7-DOCPRO option for standard-compliant documentation of the S7 project

Multi-language documentation of projects

Yes

Yes

Multi-user engineering

No

Yes

Programming
Languages

LAD/FBD/STL

LAD/FBD/STL and STL sources

As Step 7
 + S7-Graph (sequencer)/S7-SCL (textual high-level language)

Structured/symbolic programming

Yes/Yes

Yes/Yes

Check/establish program consistency

Yes/Yes

Yes/Yes

Standard libraries/user libraries

Yes/No

Yes/Yes

Online functions
Online access

MPI

MPI, Profibus, Option: Industrial Ethernet

Test functions

Monitor, control, force

Monitor, control, force, single step (debug)

Comparison function offline/online

Program, hardware configuration

Program

Diagnostics

System diagnostics

System diagnostics, report system fault, integrated process fault diagnostics in S7-Graph

Optional packages
Optional programming languages

None

S7-Graph, S7-SCL, S7-HiGraph, CFC

S7-HiGraph, CFC

Options for simulation, documentation, diagnostics and remote maintenance

S7-PLCSIM, S7-Teleservice

S7-PLCSIM, S7-Teleservice, S7-DOCPRO, S7-Pdiag

S7-Teleservice, S7-DOCPRO, S7-Pdiag
(S7-PLCSIM is all ready included in package)