Response Electronics CL6011B Spezifikationen PDF herunterladen (Seite 255)

4Ć173Target Data Configuration

Original Ć June 1990 CE4.2:CL6211

the rate filter can be enabled. YES enables the rate filter function; NO

disables it. The rate filter may be enabled for the target point even if it is

not enabled for the source point.

Rate Filter Time Ċ The rate filter time constant is a number from 0 to

600 representing the filter time constant in minutes, and is valid only if

the rate filter function is enabled. This defines the time required for 63.21

percent of a step change at the input of the filter to appear at the output.

If desired, the filter time constant may be set to zero, effectively disabling

the filter. However, it should be noted that a filter time of zero still

causes increased loading.

Rate Function Enable Ċ When the rate function is enabled, the rate of

change of the PV in engineering units per minutes will be calculated, and

the result will be placed in RAV attribute. If the rate function is enabled,

the rate filter may also be enabled. YES enables the rate function; NO

disables the function. The rate function may be enabled for the target

point even though it is not valid for the IAC and Computing Controllers.

Reporting Mode Ċ There are three reporting methods: Exception,

Periodic, and ChangeĆofĆState. This is a readĆonly field which is defined

on the TARGET DATA form.

Sample Interval Ċ The sample interval is the rate at which this point will

send its operating data to the target devices. This is a readĆonly field

which is defined on the TARGET DATA form.

Scan Rate Ċ The scan rate may be set to 0.2, 0.5, 1, 2, 5, 15, 30, or 60

(seconds). The scan rate is not tunable and therefore can only be

entered during the initial configuration or subsequent configuration

updates.

Extended Alarms Configuration Items

The UOC EXTENDED ALARMS form is used to define up to four alarms

for a point.

Alarm No. Ċ This read-only field specifies the number of the alarm

being configured.

Alarm Type Ċ Specifies whether the alarm is a high alarm, low alarm, or

deviation alarm.

Attr Ċ This configuration item specifies the attribute that will be

monitored. All attributes listed in Table NO TAG (page NO TAG) are valid

for Loop points. Valid attributes for AI points are PV, %PV, and RAV.

Deadband Ċ Alarm deadband may be used to prevent unnecessary alarm

re-activation when the measured variable is close to the alarm trip point.

The value of the monitored attribute must move away from the trip point

towards the set point by more than the deadband before the alarm will be

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Response Electronics CL6011B Spezifikationen Seite 255