IM 01C25R03-01E
6-5
6. EXPLANATION OF BASIC ITEMS
(3) The zero point/span adjustment point must be in
the range -210ºC to 860ºC.
Fixed external temperature mode:
The value obtained from the external temperature
sensor or a user-specified fixed value can be selected
for the external temperature signal. At the
EXT_TEMP_OPTS parameter, select one of Selection
0 (No): External temperature sensor, 1 (Yes): External
temperature fixed value mode, and 2 (Fall Back): Fixed
mode at broken wire.
When the external temperature fixed mode or fixed
mode at broken wire is selected, set the fixed value at
FIXED_EXT_TEMP_VALUE.
6.3.6 Simulation Function
There are two simulation functions in EJX910A; one is
the function commonly offered in FOUNDATION
Fieldbus products to simulate input of each function
block for loop check, and the other is the flow simula-
tion function to simulate measured inputs for checking
the result of flow calculation.
The simulation function described in this section is
flow simulation function. For the other simulation
function, see ‘7.3 Simulation Function.’
A preset fixed value can be output to the AI function
block or FLOW transducer block instead of the differen-
tial pressure value, static pressure value and external
temperature value calculated from the sensor signals.
Select the signal for enabling simulation in the
SIMULATE_MODE parameter. Set the value and
status to be used for simulation in the
SIMULATE_DPRESS, SIMULATE_SPRESS, and
SIMULATE_ETEMP parameters.
T0600.EPS
Parameter
Explanation
SIMULATE_
DPRESS
Set the differential pressure signal simulation
value and status.
SIMULATE_
SPRESS
Set the static pressure signal simulation
value and status.
SIMULATE_
ETEMP
Set the external temperature signal
simulation value and status.
SIMULATE_
MODE
Select the signal for enabling simulation.
0= Simulation OFF
1= Differential pressure signal simulation ON
2= Static pressure signal simulation ON
3= Differential pressure static pressure
signal simulation ON
4= External temperature signal simulation ON
5= Differential pressure external
temperature signal simulation ON
6= Static pressure external
temperature signal simulation ON
7= Differential pressure static pressure
external temperature signal
simulation ON
15=Differential pressure static pressure
external temperature signal (w/out
damping processing) simulation ON
The flow value becomes the simulation value which is
calculated by using simulation value of DP, SP and ET.
The LCD continuously displays the simulation value and
alarm (AL.080 SNR.SIM) in alternating sequence.
Simulation continues for 10 minutes, then is released
automaticaly.
If one of following alarm occurs, all the output data is
hold to the value before alarm occurs.
AL.01 (CAP. ERR)
AL.02 (AMP. ERR)
AL.03 (ET. ERR)
The simulation mode will automatically be released
after approximately ten minutes.
NOTE
If the DP or SP simulation value set by a user is
out of the setting range of the product(capsule),
the transmitter automatically use maximum or
minimum settable value in place of actual setting
value to perform simulation.
If the ET simulation value set by a user is out of
the setting range, a configuration error occurs.
6.3.7 Functions Relating to Capsule and
Amplifier Temperature
Reference to capsule and amplifier temperature
value:
In CAP_TEMP_VAL and AMP_TEMP_VAL, it is
possible to refer to the capsule and amplifier tempera-
ture value and status. The update period of this value is
about 1 sec. The temperature unit is selected by
XD_SCALE.unit of the AI block, in which
CAP_TEMP_VAL is selected. The status is normally
Good-Non Specific. However, in the case of sensor
failure or out of measurement range, it turns to Bad or
Uncertain. For specifics, refer to Table 8.9.
Determination of the range limit of capsule tem-
perature:
The range of capsule temperature is from –40 to
120
!
C. When the measured capsule temperature
deviates from –50 to 130
!
C range, set the status of
CAP_TEMP_VAL to Uncertain-Sensor Conversion not
Accurate. The status under normal conditions is Good-
Non Specific. Also, set the status of PRIMARY_
VALUE, SECONDARY_VALUE and TERTIARY_
VALUE TO Uncertain-Subnormal.
Determination of the range limit of amplifier
temperature:
The range of amplifier temperature is from –40 to
120
!
C. When the measured amplifier temperature
