Symphony C-I-CV43C, Instruction

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WBPEEUI220772A0 2 - 1
Section 2
Description and Operation
Introduction
This section explains the theory of operation for the Conductor
VMS Series 43 Auxiliary Terminal. An operator uses the auxil-
iary terminal to monitor and control the process through a
main workstation. It shows equipment status and process
states with interactive color graphic displays. Each display
uses dynamic variables and symbols allowing data to be con-
densed in each display. Any graphic element can be mixed with
any symbol on any display such as schematics, faceplates,
trends and alarm summaries. For operating procedures, refer
to Table
1-1 .
Functional Operation
The auxiliary terminal controls and monitors the process
through the main workstation. The auxiliary terminal is a
remote operator station with two monitors and keyboards con-
trolled by a CPU. Commands between the auxiliary terminal
and the main workstation pass through an Ethernet network
cable using either DECnet™ or TCP/IP protocol.
The CPU, a DEC AlphaStation 255 model 233, is the key com-
ponent in the auxiliary terminal. It sends video signals to the
monitors. A cable connects the CPU to the VGA connectors on
the monitors.
Refer to Figure 2-1 for a block diagram of the functions and
connections of the auxiliary terminal.