I made an application using FTView 8.1 and library PlantPax 3.5.
PLC is a CompactLogix, and we have some I/O modules in the rack. Communication with E300 motors, VSDs, softstarter and HMI are by ethernet, linked by a switch.
Problem is that, from time to time (not an exact window of time) the HMI display loses communication with specifics members of PlantPAx datatypes tags. This lasts about 5 seconds, then communications returns.
From diagnostics viewer I got:
Severity: Information. "CLX Processor packet 0x#######(Hexadecimal) disconnected on route RSLogix 5000 Emulator in slot # of the virtual backplane, connection #."
This one I saw on my application with emulator. I don't know at the moment if it shows something similar on the plant application.
Severity: Error. "Expression contains a tag that has an error value: ({/AREA::[SHORTCUT]TAG.Val_Notify} > 0)"
Severity: Error. "Expression contains a tag that has an error value: if ({/AREA::[SHORTCUT]TAG.Sts_Err} > 0) then[...]"
These last ones I saw it both on diagnostics of the plant and on my application at my laptop with emulator. There are analogs, digitals, vsd, e300 motors equipments with this type of error.
I saw it on the diagnostics of my emulator application also, but with much less frequency, (at the plant was about 0,5~1 hour).
At first, I was suspecting that CompactLogix wasnt handling all the communication, and I tried to Inhibit some modules lefting a few, and left the plant to check diagnostics next day. The other day, I checked diagnostics and errors occured anyway.
What makes me more confused is that I discovered later, that these errors had also happen on my laptop application, but with less frequency (maybe because I was working directly at the plant application, but again, I left the application there untouchable till next day, and errors occured).
A tip, is that these errors seems to be related to alarm notification tags.
Description of the tag alarm member .val_notify is: "Current Alarm Severity and Acknowledgement (enumeration)". .Val_notify is the most common.
Please, help me. I can't leave the application at the plant losing communications for about 5 seconds, it is critical.
Thank you.
PLC is a CompactLogix, and we have some I/O modules in the rack. Communication with E300 motors, VSDs, softstarter and HMI are by ethernet, linked by a switch.
Problem is that, from time to time (not an exact window of time) the HMI display loses communication with specifics members of PlantPAx datatypes tags. This lasts about 5 seconds, then communications returns.
From diagnostics viewer I got:
Severity: Information. "CLX Processor packet 0x#######(Hexadecimal) disconnected on route RSLogix 5000 Emulator in slot # of the virtual backplane, connection #."
This one I saw on my application with emulator. I don't know at the moment if it shows something similar on the plant application.
Severity: Error. "Expression contains a tag that has an error value: ({/AREA::[SHORTCUT]TAG.Val_Notify} > 0)"
Severity: Error. "Expression contains a tag that has an error value: if ({/AREA::[SHORTCUT]TAG.Sts_Err} > 0) then[...]"
These last ones I saw it both on diagnostics of the plant and on my application at my laptop with emulator. There are analogs, digitals, vsd, e300 motors equipments with this type of error.
I saw it on the diagnostics of my emulator application also, but with much less frequency, (at the plant was about 0,5~1 hour).
At first, I was suspecting that CompactLogix wasnt handling all the communication, and I tried to Inhibit some modules lefting a few, and left the plant to check diagnostics next day. The other day, I checked diagnostics and errors occured anyway.
What makes me more confused is that I discovered later, that these errors had also happen on my laptop application, but with less frequency (maybe because I was working directly at the plant application, but again, I left the application there untouchable till next day, and errors occured).
A tip, is that these errors seems to be related to alarm notification tags.
Description of the tag alarm member .val_notify is: "Current Alarm Severity and Acknowledgement (enumeration)". .Val_notify is the most common.
Please, help me. I can't leave the application at the plant losing communications for about 5 seconds, it is critical.
Thank you.
