“Hardware” area
The signals have the following meaning:
- S: if red a critical low level system error has been detected (typically a BUS communication error with local cards). Contact Gefran for support.
- K: if grey, the machine keyboard is not present or it’s not enabled or configured. If green, the machine keyboard is working correctly. If red, a communication error with the keyboard has been detected and it’s not working. If yellow the keyboard is now working but a previous communication error, now solved, has been detected, or the PLC is using too much CPU time, not allowing the keyboard task to run correctly. For this reason, in case of yellow “KB” signal, please take a look at PLC timing, before looking to possible keyboard hardware problems.
- B: if red the battery charge status is under the guard level.
- M: system memory occupation has reached a noticeable level. If yellow, the warning level has been reached. If red, the alarm level has been reached. Reference values can be changed by the options “Memory usage Warning” and “Memory usage Alarm” (default: 80 and 90).
- P: pages memory is greater than 90% of available memory. Please increase “Reserved memory for pages” option.
- D: system disk occupation has reached a noticeable level. If yellow, the warning level has been reached. If red, the alarm level has been reached. Reference values can be changed by the options “Disk usage Warning” and “Disk usage Alarm” (default: 80 and 90).
- F: system resources occupation (files and sockets handles) has reached a noticeable level. If yellow, 80% of available resources have been used. If red, 90% of system resources have been used.