Analog Input Cos Works - Toshiba TOSVERT VF-PS1 Series Function Manual

4.3.2.

Analog Input COS Works

Analog Input points use 3 bits in the object configuration to determine how COS is
reported.
COS_enabled bit is set then COS will be reported whenever the object status changes.
The alarm_enabled and warning_enabled bit of the object configuration allow the
supervisory system to control the types of COS reported . If the alarm_enabled bit is zero,
then the COS status of the object status would not have a low alarm or high alarm
condition. If the warning_enabled bit is zero, then the COS status of the object status
would not have a low warning or high warning condition. If both bits are zero, then the
COS status would be normal.
COS works of
High Alarm Limit
High Warning Limit
Low Warning Limit
Low Alarm Limit
High Alarm
High Warning
Low Warning
Low Alarm
* Status priority is given to "alarm" when both "alarm" and "warning" are enabled.
Status
High Alarm Analog Input Value > High Alarm limit
High Warning Analog Input Value > High Warning limit
Low Warning Analog Input Value < Low Warning limit
Low Alarm Analog Input Value < Low Alarm limit
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First, no COS is reported when the COS_enabled bit is zero. If the
MTS001Z is following.
High Alarm
High Warning
Differential
Low Warning
Differential
Low Alarm
ON
- 15 -
Differential
Differential
Normal Band
OFF
Analog Input Value < High Alarm limit - Differential
Analog Input Value < High Warning limit - Differential
Analog Input Value > Low Warning limit + Differential
Analog Input Value > Low Alarm limit + Differential
E6581540