You are not registered yet. Please click here to register!


 
 
plc storereviewsdownloads
This board is for PLC Related Q&A ONLY. Please DON'T use it for advertising, etc.
 
Try our online PLC Simulator- FREE.  Click here now to try it.

New Here? Please read this important info!!!


Go Back   PLCS.net - Interactive Q & A > PLCS.net - Interactive Q & A > LIVE PLC Questions And Answers

Reply
 
Thread Tools Display Modes
Old May 24th, 2019, 01:57 PM   #1
theColonel26
Lifetime Supporting Member
United States

theColonel26 is offline
 
theColonel26's Avatar
 
Join Date: Feb 2014
Location: West Michigan
Posts: 519
Cheap PLC that can read Data from its SD card or USB Flash Drive?

Cheap PLC that can read Data from its SD card or USB Flash Drive?


I'm looking for something in the price range of a Productivity 1000 ($180 for CPU, $50 a piece of IO modules).



We only need about 8 DI and 8 DO


We are looking for a PLC that provides some way for users to set parameters on the PLC without using a separate HMI, without creating our own software, and without having them us the programming software.



The problem with the Productivity PLC is, it doesn't support reading from the SD card only writing to it. We would like to be able to read values from a .CSV file on the card.



Another option is a PLC that has the ability to let you create your own web pages (with an API to write data) or web-based HMI.


Does anything like this exist in this price range?
  Reply With Quote
Old May 24th, 2019, 03:28 PM   #2
theColonel26
Lifetime Supporting Member
United States

theColonel26 is offline
 
theColonel26's Avatar
 
Join Date: Feb 2014
Location: West Michigan
Posts: 519
*bump*
  Reply With Quote
Old May 24th, 2019, 03:48 PM   #3
L D[AR2,P#0.0]
Lifetime Supporting Member
United Kingdom

L D[AR2,P#0.0] is offline
 
Join Date: Nov 2006
Location: UK
Posts: 6,150
How many parameters?
__________________
S7-300 to 1500 conversions done - email to s7conversions@hotmail.com
  Reply With Quote
Old May 24th, 2019, 04:11 PM   #4
kallileo
Lifetime Supporting Member
Greece

kallileo is offline
 
Join Date: Jun 2008
Location: Thessaloniki, Macedonia, Hellas
Posts: 307
The cheapset version of M241 has built-in 14 DI and 10 DO, it supports SD card read/write and has embedded web server.
I believe the cost should be around 300 USD.
I believe it's the web server is a much more user friendly solution.
__________________
automationofthings.blogspot.com
  Reply With Quote
Old May 24th, 2019, 05:23 PM   #5
Rson
Member
United States

Rson is offline
 
Join Date: Jun 2017
Location: Michigan
Posts: 353
I've used Unitronics to read / write from an SD card. It has a pretty straightforward utility.

I believe some of the micro 800 line will read / write from an SD card, but i haven't explored that avenue yet, personally.
  Reply With Quote
Old May 24th, 2019, 05:55 PM   #6
bkottaras
Member
United States

bkottaras is offline
 
Join Date: Oct 2005
Location: Chicago
Posts: 1,698
Horner.
Their OCS units R/W to an SD.
  Reply With Quote
Old May 24th, 2019, 06:12 PM   #7
Ken Roach
Lifetime Supporting Member + Moderator
United States

Ken Roach is offline
 
Ken Roach's Avatar
 
Join Date: Apr 2002
Location: Seattle, WA
Posts: 15,715
Have a look at Chapter 9 of the Allen-Bradley Micro 820 User Manual, for the various functions of the SD Card.

You can use the ConfigMeFirst.txt file to set up the firmware load, program path, and IP addressing options for the controller.

And you have a Recipe (RCP) instruction that allows your user program to both read and write tags from the SD card.

The basic 2080-LC20-20QWB unit has 12 DC Inputs (4 can be used as analog), 7 DC Outputs, and 1 Analog 0-10 volt output.

What you can buy those units for is going to depend on your discount schedule; I think street price is $250 - $280.
  Reply With Quote
Old May 24th, 2019, 10:09 PM   #8
theColonel26
Lifetime Supporting Member
United States

theColonel26 is offline
 
theColonel26's Avatar
 
Join Date: Feb 2014
Location: West Michigan
Posts: 519
Quote:
Originally Posted by L D[AR2,P#0.0] View Post
How many parameters?
between 8 and 16
  Reply With Quote
Old May 24th, 2019, 10:23 PM   #9
theColonel26
Lifetime Supporting Member
United States

theColonel26 is offline
 
theColonel26's Avatar
 
Join Date: Feb 2014
Location: West Michigan
Posts: 519
Quote:
Originally Posted by kallileo View Post
The cheapset version of M241 has built-in 14 DI and 10 DO, it supports SD card read/write and has embedded web server.
I believe the cost should be around 300 USD.
I believe it's the web server is a much more user friendly solution.
How is the SOMachine software? haven't I read people complaing on here about it being really buggy? (maybe I am thinking about something else) Sounds promising though.

Quote:
Originally Posted by Rson View Post
I've used Unitronics to read / write from an SD card. It has a pretty straightforward utility.

I believe some of the micro 800 line will read / write from an SD card, but i haven't explored that avenue yet, personally.
I have been banned by the other engineers from suggesting the Micro800 series they have had really bad experiences with them failing in the past. they say it is baaaaad juju



As for Unitronics we were looking at them for a different need and we couldn't even get their programming software to run. It kept freezing when launched.


Quote:
Originally Posted by bkottaras View Post
Horner.
Their OCS units R/W to an SD.
Hmmm I look at them. Do they have something in this budget range though?

Quote:
Originally Posted by Ken Roach View Post
Have a look at Chapter 9 of the Allen-Bradley Micro 820 User Manual, for the various functions of the SD Card.

You can use the ConfigMeFirst.txt file to set up the firmware load, program path, and IP addressing options for the controller.

And you have a Recipe (RCP) instruction that allows your user program to both read and write tags from the SD card.

The basic 2080-LC20-20QWB unit has 12 DC Inputs (4 can be used as analog), 7 DC Outputs, and 1 Analog 0-10 volt output.

What you can buy those units for is going to depend on your discount schedule; I think street price is $250 - $280.
See above




After I posted this we came accross IDEC Smart relays, they seem to offer what we need, I had no idea they had gotten so feature rich, they are more PLC than most microPLCs now.
  Reply With Quote
Old May 25th, 2019, 01:45 AM   #10
kallileo
Lifetime Supporting Member
Greece

kallileo is offline
 
Join Date: Jun 2008
Location: Thessaloniki, Macedonia, Hellas
Posts: 307
SoMachine is good and we haven't faced any problems. The question is whether you can get it for free or not.

Another thing is that if you have max 16 adjustable parameters then it seems to me that it's better to use the built-in web server, a cheap Ubiquity AP and a smartphone as HMI device to adjust the parameters or select recipes.

Siemens S7-1200 and Eaton smart relays have web servers as well.
You could get Unitronics Jazz series Plc which is really cheap and is equipped with a small 2x20 LCD display that can be used to adjust parameters.
__________________
automationofthings.blogspot.com
  Reply With Quote
Old May 25th, 2019, 11:38 AM   #11
DwSoFt
Lifetime Supporting Member
Canada

DwSoFt is offline
 
Join Date: Mar 2012
Location: Alberta
Posts: 932
Not that I'm a big fan but Horner does have HMI/plc combo units with a tiny display and some embedded io and expandable. That or a web server I would do before the CSV files but I guess if you have 8 different "recipies" each with a dedicated card that's labelled and all they have to do is insert it and hit start that's not bad then. And you can adda new card without adding to the place like you would with selector switches and such
__________________
Dan Wiebe
-----------------
Automation Manager
Phoenix Energy Services
  Reply With Quote
Reply
Jump to Live PLC Question and Answer Forum

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Topics
Thread Thread Starter Forum Replies Last Post
Magelis HMI STO501 Datalogging to USB Flash drive joseplcnet LIVE PLC Questions And Answers 0 March 8th, 2019 02:49 PM
Transfer Program from Siemens PLC to SD Card zacslade LIVE PLC Questions And Answers 4 January 17th, 2017 05:22 AM
Plc step7 read data from kepware opc princedx LIVE PLC Questions And Answers 2 December 29th, 2014 07:58 PM
MPI comunication Manuel Raposo LIVE PLC Questions And Answers 22 July 16th, 2007 07:24 AM
Review:Toshiba Drive, Horner PLC, DNET rsdoran LIVE PLC Questions And Answers 1 December 5th, 2003 07:33 AM


All times are GMT -5. The time now is 05:19 AM.


.