System States And Errors - JUMO mTRON T Operating Manual

5 Operation
5.4.2

System states and errors

The following table lists all the system states and errors that are indicated by the "Status" and
"BusError" LEDs. In most cases, further diagnostics must be performed with the setup pro-
gram.
Category "Status"
LED
Start error
Start error/
operation
Start error
Start error
Start error
42
"BusError" Meaning
LED
Internal error (1st boot-
loader)
Internal error (2nd boot-
loader)
No firmware (2nd boot-
loader)
Internal error
Buffer battery dead (sys-
tem start only possible with
"cold" reset)
Various errors when start-
ing the system bus (e.g. no
memory, initialization error,
error when reading the bus
configuration)
Bus configuration not avail-
able.
If the "Com1" and "Com2"
LEDs also light up red, the
input voltage is too low
(< 19 V).
Error in topology
Bus configuration does not
correspond to the actual
state.
Target state of hardware
configurator does not cor-
respond to the actual state.
Diagnos- Recommended action
tics with
LED Replace central pro-
cessing unit.
Setup pro- Perform restart, read
gram out error.
After several restart
attempts with an internal
error:
replace central process-
ing unit.
LED Replace buffer battery.
Setup pro- Re-transfer configura-
gram or tion with the setup pro-
Web gram.
browser
Setup pro- Check that all (manda-
gram or tory) modules are pres-
Web ent and correctly
browser connected; check LED
display of modules; if
necessary, re-transfer
configuration with the
setup program.