GE Multilin D400, Instruction Manual, Page: 129 / 192

CHAPTER 11: INTRODUCING THE D400 FEATURES
D400 SUBSTATION GATEWAY INSTRUCTION MANUAL GE INFORMATION 129
Viewing data
The real-time database (RTDB) acts as a central container for all data that is collected and
may need to be exchanged between D400 applications. The real-time database stores the
value of all input/output data collected by the D400 in the form of point data, as well as the
occurrence of events that take place (for example, disturbance or fault records). The D400
can manipulate the data from devices to produce additional local/pseudo data points. The
real-time database is commonly referred to as the system point database.
The following general types of information are stored:
•
Point data and values
• Analog set point status
• Digital control status
• Tagging/Inhibit status
• Force value status
• Statistics
Executing commands
Table 29 lists the commands which can be manually executed from the D400 HMI:
Table 29: Commands executed from D400 HMI
Operator Notes
Operator Notes can be:
•
Added, deleted and viewed by operators and supervisors.
• Viewed by observers.
Command Allows you to . . . .
Analog output interface . . . manually acknowledge an individual alarm, selected alarms
or a group of alarms.
Analog setpoint interface . . . view point status and execute a setpoint command on an
analog set point object's output point.
Digital control interface . . . view point status and execute a control command on a
digital control object's output point.
Digital output interface . . . issue control requests on digital output points.
Point forcing interface . . . view the point status and manually enter (force) the value of
any type of data point.
Raise/lower control interface . . . view point status and execute a raise or lower command on
a raise/lower control object's output point.
Raise/Lower control is available on configured buttons and
transformer objects.
Tag/inhibit interface . . . view the point status and tag or inhibit the value of any type
of data point.
Global Controls Disable . . . prevent any and all control commands from being executed.
Control Lockout Feature . . . ensure that only a single master station can access a group
of controls at one time, and can lock out groups of controls to
allow for safer local maintenance.