5 System monitoring
Positioner DC 6-06 27
However even if the value returns to within a valid range, the error remains continuously
present if the 'freeze' is requested with4849 AnaStopHoldOrReset = 1.
With these parameterization options, the appropriate error handling can be found for any
system.
5.5 Electronics monitoring
Electronics self-tests are performed to monitor the safe operating state. The following table
shows what is monitored and which errors are set in each case. The tests that are run once
when the control unit is booted are described in
10.5.1 Bootloader Start
Tests.
10.7 Emergency shutdown errors shows which errors lead to an emergency
shutdown of the system or which disable a system start. Each individual error is described
in detail in
10.8 Error parameter list.
Error Cause
3075 ErrClearFlash Error when clearing the flash memory
(display in the bootloader)
3076 ErrParamStore Error when storing parameters
3077 ErrProgramTest Error in the ongoing test of the program memory
3078 ErrRAMTest Error in the ongoing test of the RAM memory
3081 Err5V_Ref Error at voltage reference values
3085 ErrVoltage Operating voltage too high or too low
3089 ErrWatchdog Undefined program flow, internal program error
(display in the bootloader)
3090 ErrData No parameters available, or checksum of parameters is incorrect
(always active after a program download)
3093 ErrStack Stack overflow, internal program error
3094 ErrIntern Exception, internal program error
5.5.1 Voltage references
The PANDAROS DC 6-06 uses a voltage reference value for ratiometric measurement
at analogue inputs. The value must be within software-internal fixed limits or the error
3081 Err5V_Ref is output and the setpoint input cannot be corrected.
5.5.2 RAM memory test
All of the used RAM memory is tested while the program is running. The address of the
cell that is being currently tested is shown in 3895 RAMTestAddr. The test value that is
currently running can be taken from 3896 RAMTestPattern. If a fault cell is detected,
these two displays are held, the error 3078 ErrRAMTest is activated and a fatal error is
generated.
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