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Configuration
September 2018
AI2 as Terminal Temperature
1. Put the AI Block into OOS mode.
a. Go to MODE_BLK.TARGET, select OOS (0x80).
2. Go to CHANNEL, select Body Temperature.
3. Go to L_TYPE. select Direct.
4. Go to XD_Scale, select UNITS_INDEX to be °C.
5. Go to OUT_SCALE.
a. Select UNITS_INDEX to be °C.
b. Set the 0 and 100 scale to be the same as the SECONDARY_VALUE_RANGE.
6. Put the AI Block back into Auto mode.
7. Follow host procedure download schedule into block.
Filtering
The filtering feature changes the response time of the device to smooth variations in output readings
caused by rapid changes in input. Adjust the filter time constant (in seconds) using the PV_FTIME
parameter. Set the filter time constant to zero to disable the filter feature.
Process alarms
Process alarm detection is based on the OUT value. Configure the alarm limits of the following standard
alarms:
High (HI_LIM)
High high (HI_HI_LIM)
Low (LO_LIM)
Low low (LO_LO_LIM)
In order to avoid alarm chattering when the variable is oscillating around the alarm limit, an alarm
hysteresis in percent of the PV span can be set using the ALARM_HYS parameter. The priority of each
alarm is set in the following parameters:
HI_PRI
HI_HI_PRI
LO_PRI
LO_LO_PRI
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Reference Manual
00809-0400-4728, Rev CA
Configuration
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