Logix5000 Fault status

[bigLee]

Does anyone know the bits to examine for processor fault status? For a simple processor status indicator.

Currently I'm using from GSV ControllerDevice, Status

EQU 12384 = running
XIC Status.5, Status.6, Status.12, Status.13, Status.14 = not running.

Looking for what indicates fault.

Any insight is appreciated!

 

[joseph_e2]

Typically, if the processor is faulted, the logic isn't being scanned, so the GSV won't execute.

 

[bigLee]

Good point. I guess not running is all they need to know.

 

[bigLee]

Any registers to examine for minor fault status? Manual map?

 

[joseph_e2]

Hmmm....actually....I probably was wrong before. But...it'll most likely have to be done within a fault handler routine.



Do a GSV, Object = ControllerDevice, Attribute = status, like you have done. From the online help:

Device Status Bits
7...4 Meaning
0000 Reserved
0001 Flash update in progress
0010 Reserved
0011 Reserved
0100 Flash is bad
0101 Faulted modes
0110 Run
0111 Program

Fault Status Bits
11...8 Meaning
0001 Recoverable minor fault
0010 Unrecoverable minor fault
0100 Recoverable major fault
1000 Unrecoverable major fault

Controller Status Bits
13...12 Meaning
01 Keyswitch in run
10 Keyswitch in program
11 Keyswitch in remote
15...14 Meaning
01 Controller is changing modes
10 Debug mode if controller in run mode

You might also try Object = FaultLog, Atribute = MajorFaultBits:

Individual bits indicate the reason for the current major fault. Each bit has a specific meaning:
1 Power loss
3 I/O
4 Instruction execution (program)
5 Fault Handler
6 Watchdog
7 Stack
8 Mode change
11 Motion

Attribute = MinorFaultBits:

Individual bits indicate the reason for the current minor fault. Each bit has a specific meaning:
4 - Instruction execution (program)
6 - Watchdog
9 - Serial port
10 - Energy Storage Module (ESM), or Uninterruptable Power Supply (UPS)
20 - License/a required CodeMeter license is missing or missing.

This doesn't look like a comprehensive list of possible faults. Here's a link to major/minor faults:
https://literature.rockwellautomation.com/idc/groups/literature/documents/rd/1756-rd001_-en-p.xlsx
I'm not sure how to extract those from the processor, though.

 

[Ken Roach]

There is a whole Programming Manual for status and fault handling.

Go to the RA Literature website and search for 1756-PM015.

https://www.rockwellautomation.com/en-us/support/documentation/literature-library.html

 

[widelto]

@bigLee : I got a routine for detecting and showing minor error, if you want it I can give it to you, I got both version compactlogix and controllogix.
Please send me a PM with your email.com.

 

[JeremyM]

Typically, if the processor is faulted, the logic isn't being scanned, so the GSV won't execute.

You actually get an opportunity to catch and respond in some way to a major fault by implementing the Fault Handler program in a project.

 

[PLCNooooob]

@bigLee : I got a routine for detecting and showing minor error, if you want it I can give it to you, I got both version compactlogix and controllogix.
Please send me a PM with your email.com.

Can you send to me too?

 

[Tim Ganz]

This is very Interesting. I would love a copy of that also to learn from and practice with.