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2 system states and errors, 5 operation – JUMO 705020 mTRON T - Analog Input Module, 4-Ch. Operating Manual User Manual

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31

5 Operation

5.2.2

System states and errors

The following table lists all the system states and errors that are indicated by the "S" LED (Sta-
tus). In most cases, further diagnostics must be performed with the setup program.

Category

"S" LED
(Status)

Meaning

Diagnos-
tics with

Recommended action

Start error

Module error (hardware does not
start up)

LED

Replace module

Start error

Internal error (bootloader)
Various errors during startup (e.g. no
memory, initialization error)

LED

Replace module

Start error

No firmware

LED

Replace module

Bus status

No connection to central processing
unit

LED

Check whether the central pro-
cessing unit is running; check
cabling and topology

Bus status

System in "Stop" (INIT) state – no
error, only in start phase

LED

Bus status

System in "Stop" (PREOP) state – no
error, only in start phase

LED

Operation

(Priority 1)

Calibration mode

LED/setup
program

Operation

(Priority 2)

Collective alarm (incl. out of range)

LED/setup
program

Operation

(Priority 3)

System in "Stop" (SAFEOP) state –
no error

LED

Operation

(Priority 3)

System in "Run" (OP) state – no
error

LED