Boot Error with Unilogic 1.33 Build 348 - [Code 7]

[Code007]

Hello,
We have a curious problem after updating to Unilogic 1.33.348. After sending to program to the PLC, the PLC is booting but shows the message below : 
BOOT ERROR
PLC (CPU) did not boot successfully [Code 7]

We firt thought that it was a hardware problem so we tried on another PLC and we have the same issue.
Also, unilogic shows the following message "Could not apply command" after the program is downloaded into the CPU.

Thanking you in advance for your reply.

[Daniel_EWW]

We have had the same message yesterday (UniLogic Version 1.33.236) . We contacted the support and sent them the log files. We will share the info as soon we get an answer.

[Saragani]

@Code007

Please send Unitronics support the project. Since you are telling that the app itself is causing the PLC to reboot (it happens with another PLC), then we might be able to reproduce the problem in our office when downloading your project.

[Shraga]

On 5/31/2023 at 2:59 PM, Code007 said:

Hello,
We have a curious problem after updating to Unilogic 1.33.348. After sending to program to the PLC, the PLC is booting but shows the message below : 
BOOT ERROR
PLC (CPU) did not boot successfully [Code 7]

We firt thought that it was a hardware problem so we tried on another PLC and we have the same issue.
Also, unilogic shows the following message "Could not apply command" after the program is downloaded into the CPU.

Thanking you in advance for your reply.

Hello, 
Did you Upgrade PLC firmware after Unilogic update?

[Merle]

I am having the same issue.  Did anyone find a definitive solution to this?

NOTE:  I cannot update the PLC FW since this error started to appear.  I cannot even update the RTC?  Just get an error "Could not apply command" to anything I try to do.

[Daniel_EWW]

We exchanged the PLC on this site. With the new PLC everything works fine.

Then we tested the Boot Error PLC on my desk - no problems for 3 weeks. So, we decided to use this PLC for a monitoring task at a customer site. Since approx. one week the PLC is offline (the PLC was doing the task before for more than 2 weeks at this site). I can't tell now if the PLC is completely dead now, or it is just a network issue…

Try it with another PLC and write a ticket to the support. Maybe they got some chips which are not completely ok and more sensitive to environmental conditions (e.g. temperature...).