What is the deffrence between Siemens S7-300 & S7-400 PLC?
- 4 Answers
- 30936 Views
- ADC, I also Faced
- E-Mail Answers
Answer Posted / taj
Siemens rates the S7-300 as a medium level PLC, and the S7-400 as a high-level PLC. So there are differences in work memory, processor speed, number of communication links and I/O connectivity.
First point, the S7-400 family is rack-based (Multi-pin backplane linking all modules, from power supply to I/Os) whereas the S7-300 is a bus-linked platform (a serial connector links all modules). So essentially the physical layout limits the S7-300 back[plane exchanges to MPI speeds (187,5 Bits per second), whereas the S7-400 uses parallel connections over the backplane rack, permitting higher exchange rates, and a higher module-density.
Second point, the form factor of the S7-300 is smaller, more compact than the S7-400, so this is something to take into account if space is a premium (inside a small machine panel, for example).
Now, the higher S7-300 CPUs (especiatlly for the new S7-317 and S7-319)have specs that approach (and sometimes pass) the specs of lower end S7-400 CPUs, so the distinction is starting to blur.
| Is This Answer Correct ? | 8 Yes | 1 No |
Post New Answer View All Answers
hello! sir i did three year of diploma in electrical (2007- 2010) and now i m a student of electrical engineering. sir can i apply for germany visa for study and part tome work over there?
WHAT ARE THE DATAS REQUIRED FOR PROTECTION AND METERING AND CONTROL AND LOGIC PREPARATION,HOW TO STUDY THE PROTECTION AND METERING?
how can I calculate charging current of cable/overhead conductor? what is roll of voltage in it ?
What are root loci?
What are safety device in vcb and acb?
Is a 300w induction motor used in a food processor as powerful as a 1000w DC motor.
How do we calculate transformer oil in liter from the rating of the transformer.
what is the defination of Cable database? What are the points are considered while preparing cable database? Is there any sample available for cable database?
What will be the output voltage of a transformer if it is primarily energized from a square wave voltage source?
How can I calculate per unit (KWH) fuel (Gas/ Diesel both) consumption 1MW unit?
why output is out of phase in case of common emitter?
What is the problem of internal failure in ship engine telegraph system norcontrol?
Why using synchronising methed in DG's sets?
What is pi controller?
Why neutral cable carry current.
