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.

---------->>>>>Get FREE PLC Programming Tips

New Here? Please read this important info!!!


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

PLC training tools sale

Reply
 
Thread Tools Display Modes
Old March 25th, 2020, 11:59 AM   #1
abderrezak
Member
Algeria

abderrezak is offline
 
Join Date: Jan 2007
Location: Medea
Posts: 6
Book Omron CP1H Write protect

Hi,
I recently had to buy a batch of new electrical components containing
10 PLC Omron Type (CP1H-X40DRA) Apparently stored in store (to be used as spare parts).
And when we check them, I see that they are in perfect condition and that they are already programmed for the applications for which they are intended, which did not interest me since I intended to use them for my own applications.
To my surprise, I see that I cannot download my program because of the write protection (by checking of course that the DIP SWITCH n˚1 is OFF)
The following message appears on CX Programmer on each attempt:
Erasing program memory failed.
The program memory may be protected in read mode with prohibition of erasure.

I understand of course that we have the right to protect a program against reading or modification, but here to condemn the PLC that we bought and to prohibit the reuse of hardware is something that seems unfair to me!
I also doubt that maybe it was I who did not know how to reset the PLC for my own use (Despite my research on the specialized Forums).
Please enlighten me on the matter or guide me how to remedy this problem.

online status of AR99 (Relative to read / write protection)

AR99.00=1: UM read protection is set

AR99.01=1: Task read protection is set.

AR99.02=1: Overwriting prohibited (write-protected)

AR99.03=0: Creation of backup program file allowed

Thank you for help

Thanks for help
  Reply With Quote
Old March 25th, 2020, 01:39 PM   #2
BITS N BYTES
Lifetime Supporting Member
United States

BITS N BYTES is offline
 
Join Date: Jun 2005
Location: Miami Beach
Posts: 434
Put PLC in PROGRAM mode. From PLC pulldown menu Select "Clear All Memory Areas". Select "Initialize" then "OK"
  Reply With Quote
Old March 26th, 2020, 06:17 AM   #3
abderrezak
Member
Algeria

abderrezak is offline
 
Join Date: Jan 2007
Location: Medea
Posts: 6
I've already done it
The response is :
failure to erase the entire memory area

Thank you
  Reply With Quote
Old March 26th, 2020, 08:47 AM   #4
sbaum
Member
Canada

sbaum is offline
 
Join Date: Mar 2009
Location: Ontario
Posts: 158
I haven't researched this, but does it work to pull the battery for a while?
  Reply With Quote
Old March 26th, 2020, 11:28 AM   #5
abderrezak
Member
Algeria

abderrezak is offline
 
Join Date: Jan 2007
Location: Medea
Posts: 6
I removed the battery for 1 month and nothing changed
Thanks
  Reply With Quote
Old March 26th, 2020, 01:50 PM   #6
gclshortt
Member
Canada

gclshortt is offline
 
gclshortt's Avatar
 
Join Date: Dec 2014
Location: Ontario
Posts: 3,044
On the front of the CPU, you will see dip switches. I believe that the first switch is UM protection. Make sure that it is off and try to erase the program.

I hope this helps you out.
Regards,
__________________
Garry
https://www.accautomation.ca
Connect with us on Facebook: facebook.com/accautomation/
  Reply With Quote
Old March 26th, 2020, 02:25 PM   #7
gclshortt
Member
Canada

gclshortt is offline
 
gclshortt's Avatar
 
Join Date: Dec 2014
Location: Ontario
Posts: 3,044
Oh, I see that you have tried the switch setting.

http://www.plctalk.net/qanda/showthread.php?t=81125
This was a similar thread but they knew the password.

Can you turn off AR99.02?
If so then try to then erase the program.

Just a thought,
Regards,
__________________
Garry
https://www.accautomation.ca
Connect with us on Facebook: facebook.com/accautomation/
  Reply With Quote
Old March 26th, 2020, 02:38 PM   #8
AustralIan
Member
Germany

AustralIan is offline
 
Join Date: Jan 2013
Location: Germany
Posts: 1,115
Hmmm, I guess it prevents someone from hacking the machine. "just flick this switch and put whatever you want in place."
It might be you have to call your omron dealer and ask them how much to "repair" the PLC so you can program it anew.
  Reply With Quote
Old March 27th, 2020, 04:59 AM   #9
abderrezak
Member
Algeria

abderrezak is offline
 
Join Date: Jan 2007
Location: Medea
Posts: 6
A99.02 is read only, I even tried without success

Thank you
  Reply With Quote
Old March 27th, 2020, 05:00 AM   #10
abderrezak
Member
Algeria

abderrezak is offline
 
Join Date: Jan 2007
Location: Medea
Posts: 6
A99.02 is read only, I even tried without success

Thank you
  Reply With Quote
Old March 27th, 2020, 05:08 AM   #11
abderrezak
Member
Algeria

abderrezak is offline
 
Join Date: Jan 2007
Location: Medea
Posts: 6
An idea came to me, but to try it I need the help of someone with the same type of PLC (CP1H-X40DRA)

It is a question of making a backup of its empty plc or whatever with the PLC BACKUP TOOL in cx-programmer and sending it to me to do the reverse operation by overwriting the program in the UM of my PLC

I think itís possible especially seeing the online status of AR99 (Relative to read / write protection)

AR99.00=1: UM read protection is set

AR99.01=1: Task read protection is set.

AR99.02=1: Overwriting prohibited (write-protected)

*****AR99.03=0: Creation of backup program file allowed ********

Thanks for help
  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
RSLogix CIP Datatable Write allenz2123 LIVE PLC Questions And Answers 3 December 14th, 2014 04:23 PM
Beginning Omron CP1H CP1W bernie_carlton LIVE PLC Questions And Answers 9 May 8th, 2014 06:38 PM
problem with write protect for plc s7 program mohamed atta LIVE PLC Questions And Answers 0 October 16th, 2011 02:14 AM
omron again??? fuzzywuzzy LIVE PLC Questions And Answers 1 February 10th, 2007 11:21 AM


All times are GMT -5. The time now is 02:43 AM.


.