JUMO variTRON 300 Operating Manual page 107

System states and errors
The following table lists all the system states and errors that are indicated by the "S" LED (module-de-
pendent).
Category
Start error
Start error
Start error
Start error
Bus status
Bus status
Bus status
Operation
Operation
Operation
Operation
The web application (service) and the setup program (hardware configuration) must be used for further
diagnosis and, if necessary, measures.
"S" LED Meaning
(Status)
Module error (hardware does not
start up)
Internal error (bootloader)
Various errors during startup (e.g. no
memory, initialization error)
No firmware
Incorrect optional board 1, 2, 3
(actual/target)
No connection to central processing
unit
System in "Stop" (INIT) state – no
error, only in start phase
System in "Stop" (PREOP) state – no
error, only in start phase
Module not calibrated (LED flashes
red-green) or
module in calibration mode (cali-
(Priority 1)
brate/test; LED flickers red-green)
Collective alarm (incl. out of range)
(Priority 2)
System in "Stop" (SAFEOP) state –
no error
(Priority 3)
System in "Run" (OP) state – no
error
(Priority 3)
Diagnos- Recommended action
tics with
LED Replace module
LED Replace module
LED Replace module
LED Check optional board and
replace, load, or remove as
required; replace module if
necessary
LED Check whether the central pro-
cessing unit is running; check
cabling and topology
LED
LED
LED/setup
program
LED/setup
program
LED
LED
7 Annex
107