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ifm
Programming Manual BasicDisplay CR0452 v03.02
05 / 2018
System description
Software description
>
3.4.4
Performance limits of the device
7358
Note the limits of the device!
→ Data sheet
>
Watchdog behaviour
15277
In this device, a watchdog monitors the program runtime of the CODESYS application.
If the maximum watchdog time (application program: 100 ms; visualisation: 1 200 ms) is exceeded:
> the device changes to the "Timeout Error" state
> all processes are stopped (reset)
> all outputs are switched off
> the screen goes black
> the status LED flashes red at 10 Hz
Eliminate the fault:
Delete application program!
PowerOn Reset
Reload the application program into the device
If the watchdog in question fails:
> a second watchdog leads the device to the state "Fatal Error"
> the status LED lights red
Eliminate the fault:
PowerOn Reset
If unsuccessful:
Goto Bootloader
PowerOn Reset
Reload the runtime system into the device
Reload the application program into the device
If unsuccessful:
Hardware error: return device to
ifm
!