CompactLogix to Siemens equivalent.

Elcan · Nov 15, 2016

Hi all,
I'm new to Siemens and I'm trying to find the Siemens equivalent for a CompactLogix L33ER.
I know Siemens use a different memory arrangement, so that's the part I cannot compare apples to apples. As a reference, a project in a CompactLogix can take me 300-500 KB.

Thank you!

JesperMP · Nov 15, 2016

How many IO and do you use any motion axes ?

As a reference, a project in a CompactLogix can take me 300-500 KB.

I dont know how to convert that to a Siemens. If you theoretically made the same program in SLC500 or PLC5 (I know, not really possible) how much memory would it then take up ? You can multiply an SLC500 or PLC5 program memory by x1.5 to get the approximate memory requirement in a Siemens PLC.

Elcan · Nov 15, 2016

JesperMP said:
How many IO and do you use any motion axes ?

No motion axes.
Around 100-200 digital I/Os
Around 20-40 analog I/Os

Elcan · Nov 15, 2016

I'm looking at the S7-1500 series, but I don't know if the CPU 1511-1 is not powerful enough or if the CPU 1515-2 is too much power for my needs.

JRW · Nov 15, 2016

You get two separate (2 NIC) Ethernet ports with the 1515
A 1513 has 1. I would think the 1513 would be fine because of the 300 KB code and 1.5 MB data

JRW · Nov 15, 2016

pic from Portal

Elcan · Nov 15, 2016

JRW said:
You get two separate (2 NIC) Ethernet ports with the 1515

The CompactLogix L33ER has 2 Ethernet ports, but 1 would be enough for me.

A 1513 has 1. I would think the 1513 would be fine because of the 300 KB code and 1.5 MB data

That's where I don't know how to compare. I guess if I have a 300KB in the CompactLogix, the 300KB + 1.5MB in the 1513 would be enough.

JRW · Nov 15, 2016

make use of functions,data blocks and function blocks in Siemens
Forget your AB ways and come to the dark side...

bkottaras · Nov 15, 2016

JRW said:
make use of functions,data blocks and function blocks in Siemens
Forget your AB ways and come to the dark side...

Got a kick out of this one!!!!

jazzman44 · Nov 15, 2016

JRW said:
make use of functions,data blocks and function blocks in Siemens
Forget your AB ways and come to the dark side...

In my opinion AB is much easier to troubleshoot , software is easier to use

JesperMP · Nov 16, 2016

JesperMP said:
If you theoretically made the same program in SLC500 or PLC5 (I know, not really possible) how much memory would it then take up ?

I would like to have this answered. Then I can tell you which Siemens CPU will be powerful enough for your application. It doesnt have to be accurate. Just not a factor 10 off.

geniusintraining · Nov 16, 2016

jazzman44 said:
In my opinion AB is much easier to troubleshoot , software is easier to use

It depends on who wrote the code... if they wrote it with the troubleshooter in mind and some one looking at the code they wrote or if they only wanted to get the machine running

bkottaras · Nov 16, 2016

This may help a bit.
From Siemens site.

Elcan · Nov 16, 2016

bkottaras said:
This may help a bit.
From Siemens site.

Excellent reference!!!

bkottaras · Nov 16, 2016

Compared to MicroLogix the 1214 is a beast.
If you make the leap, go for the PRO version of TIA.
You'll be set to tackle their entire range of hardware.
And, get the SUS.

CompactLogix to Siemens equivalent.

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