Can S7-300 analog and digital input/output modules be installed on a CPU 414 -5h?

Sachinpatke

Hi Iheb Ch,

As already told, it will be extension of profibus subnet. 

The S7-400H will have two profibus subnets eg. Profibus_1 & Profibus_2. So OLM ic central panel will convert it to FO signal and OLM in extension rack will convert it into again in elctrical signal.

Please refer suggested manual by dchartier.

 Hi

I want to buy 414 -5h cup

Is s7-300 analog and digital input/output modules can be installed or it is better to install s7-400 I/o modules

Of course sm 321 is cheaper than sm 421 

And sm 322 cheaper than sm 422    and so on

Thanks

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Split from S7-412-5H Extension.

dchartier

Hello hussein;

You can use S7-300 I/O modules with a S7-400H CPUs if you set them up as Profibus or Profinet nodes. That means you install the I/O modules with IM 153-2 head module for Profibus or IM 153-4 for Profinet.

Important information on installing these nodes with a S7-400H systems will be found in the S7-400H Fault-tolerant system manual:

https://support.industry.siemens.com/cs/us/en/view/82478488

Hope this helps,

Daniel Chartier 

 Thanks

But I still ask if installing sm 421 better than sm 321 in s400-H ?

Why sm 321 is cheaper than sm 421 ?

Thanks

mopS04

hi husseinwaledia,

S7-300 modules are completely different to S7-400 modules. They are different in design and performance.

It doesn´t make sense to compare them. It is like comparing a train with a car, or a Fiat 500 with a Porsche Cayenne.

hope this helps,

regards,

 I want to know is it more compatible to use sm 421 with 414-5H than using sm321?

why sm 321 is cheaper than sm 421?

Thanks

dchartier

Hello hussein;

First of all, you seem to always ask the same question, so let's have you answer one for a change.

Is this a research for an actual project, or simply to educate yourself?

If ypou are planning top use the S7-414-5H in a redundant, fault-tolerant pair, then the I/O modules in the configuration must be S7-300 modules mounted in a Profibus or Profinet installation (known as ET 200M stations). You cann ot use S7-400 I/O modules in the rack for that type of configuration.

This information is very clear from the already suggested manual, and the already attached image from the first reply to your question.

Now, why are S7-400 I/O modules more expensive? I beleive you already had a good answer from our friend mopS04. The PLC families are different, S7-400 modules are larger, designed to connect to a S7-400 backplane connector, more robust, with faster reaction times than their S7-300 counterparts, whereas S7-300 modules use a simple U-connector to connect to the PLC, are smaller and less robust, etc...

Consider also that the S7-400 PLCs were always considered high-end automation systems, designed to control complete plants whereas the S7-300 were sold as middle-level PLCs, for smaller projects, at the machine level:

https://w3.siemens.com/mcms/programmable-logic-controller/en/advanced-controller/s7-400/pages/default.aspx

https://w3.siemens.com/mcms/programmable-logic-controller/en/advanced-controller/s7-300/pages/default.aspx

So basically, as in any commercial endeavour, the S7-400 CPUs and I/O modules are more expensive because clients were willing to pay that price to obtain what they needed in their projects.

To have a description of all digital and analog I/O modules in the two CPU families, look at the following documents:

SIMATIC S7-300 S7-300 Module data

https://support.industry.siemens.com/cs/ww/en/view/8859629

SIMATIC S7-400 S7-400 Automation System Module Data

https://support.industry.siemens.com/cs/ww/en/view/1117740

Hope this helps,

Daniel Chartier

 Please really I want to buy 414-5H or 416-5H and I want to know all data about this subject 

So if we want  redundancy in each thing (cpu, I/O module , etc) we should buy s7-300 I/O  module and we cannot use s7-400 I/O module?

Please tell me as soon as possible

mopS04

hi,

I guess the best for your is when you contact your local Siemens technical consulting support.

They will have a look at your project and can offer you the best solution for your needs.

Have a look into the contact-database.

regards,

 But I just asked an easy question 

Is it possible to get S7-400 I/O modules and front connector to the redundant 416-5H PLCs? 

Or we must use s7-300 I/O modules and front connector to them?