Endress+Hauser iTEMP TMT 165 FOUNDATION Fieldbus Betriebsanleitung Seite 102

9 Troubleshooting
102
Analogue Input fct. Block:
The operating mode cannot
be set to AUTO.
– Parameters cannot be
modified or
– No write access to
parameter
Transducer Block:
The manufacturer-specific
parameters are not visible.
Analogue Input Fct. Block:
The output value OUT is not
updated despite having a
valid status.
Error messages
System or processing errors occurring during commissioning or measurement are shown immediately in
the configuration program via certain parameters → page 103.
FOUNDATION Fieldbus temperature transmitter
There may be several reasons for this. Check the following in sequence:
1. Check whether the operating mode of the Analogue Input Function
Block is in AUTO mode → Parameter group MODE_BLK / parameter
TARGET.
If not and the mode cannot be set to AUTO, first check the following.
2. Make sure that the parameter CHANNEL (selection process variable)
is already configured in the Analogue Input Function
Block → page 99
3. Make sure that the parameter group XD_SCALE (input range, unit) is
already configured in the Analogue Input Function Block → page 99
3
Caution!
Make sure that the selected unit is suitable for the measured variable
of the selected process variable. Otherwise the parameter
BLOCK_ERROR will display the error message 'Block Configuration
Error'. In this status the block operating mode cannot be set to AUTO.
4. Make sure that the parameter L_TYPE (type of linearisation) is already
configured in the Analogue Input Function Block → page 99
3
Caution!
Make sure that with the type of linearisation "Direct" the scaling of the
parameter group OUT_SCALE is identical to that of the parameter
group XD_SCALE. If set incorrectly the parameter BLOCK_ERROR
will display the error message "Block Configuration Error". In this sta-
tus the block operating mode cannot be set to AUTO.
5. Check whether the operating mode of the Resource Block is in AUTO
mode → Parameter group MODE_BLK/parameter TARGET
6. Make sure that the function blocks are correctly connected to each
other → page 100
2
Note!
You can use the parameter WRITE_LOCK in the Resource Block to
check whether the write protection is activated or deactivated:
LOCKED = write protection enabled (activated)
UNLOCKED = no write protection (deactivated)
1. The block operating mode is wrong. Certain parameters can only be
modified in mode OOS (Out Of Service) or MAN (MANual) → Set the
operating mode of the block to the required mode → Parameter
group MODE_BLK.
2. The value entered is outside the specified input range for the param-
eter in question:
→ Enter suitable value
→ Increase input range if necessary
The device description file (Device Description, DD) has not been loaded
into the host system or the configuration programme
→ Load the file into the configuration system.
Reference sources of the DD: see page 97
Simulation is active → Deactivate simulation via parameter group
SIMULATE.
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