Input/Output Simulation; Diagnosis; Rescaling The Input Values - Endress+Hauser iTEMP TMT 165 FOUNDATION Fieldbus Betriebsanleitung

FOUNDATION Fieldbus temperature transmitter
2
Endress+Hauser
• Uncertain
The output value OUT can only be used for further processing to a limited extent. This
status of the process variable in the Transducer Block is forwarded via the status of
the output parameter OUT.
• BAD
The output value OUT is invalid. Occurs when the Analogue Input Function Block is
switched to operating mode OOS (Out Of Service). Brought about if the status of the
process variable from the Transducer Block is the same, since this status is similarly
forwarded to the status of OUT. The status is shown via the parameter BLOCK_ERR =
Input Failure.

11.6.7 Input/output simulation

Parameters of the Analogue Input Function Block allow simulation of the input
and output of the function block:
1. Simulation of the input of the Analogue Input Function Block:
The parameter group SIMULATE (see page 135) can be used to specify the input
value (measured value and status). Since the simulation value runs through the
entire function block, all the parameter settings of the block can be checked.
Note!
If simulation is blocked by the jumper on the device board (see page 97) then sim-
ulation mode cannot be activated in the parameter SIMULATE (see page 135). In
the Resource Block, the parameter BLOCK_ERROR (see page 114) shows whether
simulation of the Analogue Input Function Block is possible.
2. Simulation of the output of the Analogue Input Function Block:
Set the operating mode in the parameter group MODE_BLK (see page 134) to MAN
and specify the desired output value directly in the parameter OUT (see page 134).

11.6.8 Diagnosis

The parameter BLOCK_ERR shows the current block status and in the event of an error,
the cause of this (see page 129).

11.6.9 Rescaling the input values

In the Analogue Input Function Block the input value or input range can be scaled in
accordance with the automation requirements..
Example:
• The system unit in the Transducer Block is °C.
• The measurement range of the sensor is -200 to 850°C.
• The process relevant measurement range is 0 to 200°C.
• The output range to the process control system should be 0...100%.
The Analogue Input Function Block must be configured as follows:
• Parameter CHANNEL (see page 130)
Selection: Channel = 1 Temperature
• Parameter L_TYPE (see page 132)
Selection: L_TYPE = Indirect
The measured value from the Transducer Block (input value) is rescaled linearly via
the input scaling XD_SCALE to the desired output range OUT_SCALE.
11 Appendix
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