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5-70 Field Control™ Genius® Bus Interface Unit User’s Manual
–
October 1999 GFK-0825F
5
Low Alarm Limit
Next, set the low alarm limit for the RTD. The range is -32,767 to +32,767.
Each RTD channel can have a low alarm limit and a high alarm limit. Alarms do not stop the
process or change the value of the input.
Alarm limits can be set anywhere over the dynamic range of the signal. If alarm reporting is not
wanted, alarm limits can be set beyond the dynamic range of the signal so they will never be
activated.
The units used for alarm limits are the same type entered on the Units screen (tenths of Ohms, or
tenths of degrees Celsius or Fahrenheit). If units are subsequently changed, alarm limits should be
reviewed and adjusted if necessary.
S:1 CH1 ALARM LO
-200
< > chg entr
1. Use the F3 (change) key if you want to change the Low Alarm Limit, and enter the new value.
2. Use the F4 (enter) key to save the selections on this screen and go on to the next item.
High Alarm Limit
Next, set the high alarm limit for an RTD. The range is -32,767 to +32,767. The high alarm limit
must be greater than the low alarm limit.
S:1 CH1 ALARM HI
800
< > chg entr
1. Use the F3 (change) key if you want to change the High Alarm Limit, and enter the new value.
2. Use the F4 (enter) key to save the selections on this screen and go on to the next item.