Causes of spliting into many categories of PLC’s

When you start working with a PLC of a particular company, it’s probably that you’re going to be wonder why there are so many PLC lines that, It’s right? Isn’t it?

The simple fact is that each product line will fit in with different application goals (models do not fit, NSX del it immediately or improve it)

There are three general types:

1. Simple sequential logic:
This product line is suitable for applications that simply need to control logic and timing (eg, star-delta start, etc.), so IO numbers are not much, memory is small, The number of operation commands is not complicated, …
Here are some typical products:
– Koyo: CLICK product line
– Siemens: Logo product line
– Omron: Zen line
– Schneider-Tèle: Zelio product line
– …
2. Compact product line:
The name of the product line that speaks specifically: includes full source, CPU, IO, … to set up the application. The characteristics of this line is that although the IO number is small but the power of the control is very great: program memory is large, number of rich programming support, …
Some names sp:
– Koyo: product line DL-05, DL-06, DL-105
– Siemens: S7-200 product line
– Mitsubishi: FX product line
– Schneider-Tèle: Twido product line
3. Product line module:
This product line is intended for use with large and large IO applications. To use this type, you must select all frequencies for the application, basically the rack (or base), source module, CPU, IO module, terminal, …
This line is very flexible, the number of IO does not mean that the application will be complicated, so the CPU of this line divided into many types and memory power as well as computing power is also different (weak As powerful as Hecquin is)
Some product names:
– Koyo: product line DL-205, DL-305, DL-405
– Siemens: S7-300, S7-400 product line
– Mitsubishi: A-series, Q-series, …

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