ABB PM891 3BSE053240R1 AC800M processor unit
as an automatic inhibit. Substitute Value is used to enter a substitute value for the
tag. When a substitution is applied, "scan" is automatically turned off and the value in
the controller is unchanged. The substitute value is only performed at the Operator
Workplace level. Only operators with the proper, user selected security level can
access this function. The Red Eag feature is available on controllable tag types that
support red tagging. Red tagging is a method used to place a tag out of service (for
maintenance or other purposes) in a way that prevents it from being put back into
service by unauthorized users. Typically only a limited number of users is permitted
to implement this feature. Web pages are defined for each objeat type for display of
operational data. This also allows the user to change the state of the object (such as
red tags), utilize manual inhibiting of alarms, and substitute values.
Figure 15. Operating Parameders view
Field
Description
Type
Tag type (Harmony station)
Description
Information entered during configuration that further
describes the function of the tag
Security group
Security group that the tag belongs to
Alarm status
Selected if the tag is reporting an alarm. This is a single
overall alarm status indication
Quality
Information reported from the system about the quality of
the tag
Tag inhibition
Information about the inhibit status of the tag. A tag inhibit
disables event reporting for the tag
Inhibit Tag
Tag that causes in hibit when the inhibit value is reached
Inhibit Value
Value set during configuration that causes inhibit
Overal Inhibit
Indicates that the tag is inhibited
Auto Inhibited
Selected if tag is automatically inhibited by another tag in
the system
Manual Inhibit
Enable to manually inhibit event reporting for the tag
Manual Inhibited
Time when the tag was manually inhibited
Time stamp

Field
Description
Loop
Loop number from 0 to 250 that identifies the
communication network (loop) of the Harmony control unit
Node
Node number from 0 to 250 that identifies the
interconnection point on the communication network
Module
Module number from 0 to 31 that identifies the device
within the Harmony control unit
Block
Function block location from 0 to 31,998 that identifies
the location of a specific function block in the Harmony
configuration(controller)
Disestablished
Selected if the tag is disestablished in the
Cnet-to-computer interface. A tag becomes disestablished
when a substitute value has been entered
Substituted Value
Value of tag is manually substituted
Suspended
Enable to have the system ignore the tag
Suspended Time stamp
Time when the tag was suspended (manually or
substituted)
Exception Count
Number of exception reports processed for this tag.
Spec Time Stamp
Time when specification data was received from the
controller
Table 2.Operating Parameters -Harmony tab5
Figure 16.System Status Viewer
■System Status. The System Status Viewer (Figure 16) is used to monitor the status
of the Harmony system applications. The description field can display one or all of
the following messages:
Alarm State (Normal or Alarm) -This displays normal as long as there are no other
errors. If the status is offline or any of the other errors exist, then it displays alarm
.Status (Online or Offline)Indicates that the CIU is Online or Offline
.CommErr - Indicates that there is some kind of communication error
·InternalErr · This is the internal error in the configuration
■ Composer“View and Monitor.” The Harmony Composer Configuration View
and Monitor function is integrated with 800xA Process Portal. With a right-click
on the graphic tag, the associated Control Logic Diagram can be viewed with live
data monitoring. This is a "view only" function that maintains high security and the
integrity of the control logic configuration.
Sequence of Events. Harmony's Sequence of Events (SOE) system enables plant
personnel to closely monitor critical digital points where the sequence of changes