Protocol
Control
System
Users
Manual
2/12/01
perform a maintenance action (force a circuit
into defrost, force off a compressor, etc). Note
that there are maintenance screens for Circuits,
Suction Groups and Lighting functions.
8.4.4 Alarm Screen
The Alarm screen displays the alarm log. It can
be entered from any screen by pressing the
ALARM key.
8.4.5 Screen Navigation
8.4.5.1 Status Screens
Pressing the ESCAPE key from any
configuration or maintenance screen will always
return you to the Main Status screen. If you are
on the Main Status screen, pressing the
ESCAPE key will move you to the Lighting
Status screen. Each press of the ESCAPE key
will move to the next status screen as shown on
the top row of Figure 18.
8.4.5.2 Configuration Screens
All configuration screens are entered from a
status screen. System, Lighting and Auxillary
configurations screens are entered by pressing
the enter key when in the corresponding status
menu. Circuit, Suction Group and Discharge
configurations screens are all entered from the
Main Status screen. To enter the Suction Group
configuration screen from the Main Status
screen, move the cursor to either Suction Group
1 or Suction Group 2 pressure field, then press
the ENTER key. To enter the Discharge
configuration screen, move the cursor to the
Discharge pressure field , then press the ENTER
key. To enter the Circuit configuration screen,
move the cursor to the appropriate circuit
number (see Figure 9), then press the ENTER
key.
Once in the configuration screen, you can move
to the next configuration screen by pressing the
DOWN ARROW key (with the cursor in the
upper left hand corner). You can move back to
the previous configuration screen by pressing
the UP ARROW key. Note that at any time you
can press the ESCAPE key to return to the Main
Status screen.
8.4.5.3 Maintenance Screens
All maintenance screens are entered from a
corresponding configuration screen. For
example, if you wan to enter the Circuit
Maintenance (to force a defrost), you must first
enter the Circuit configuration screen. Once in
the Circuit configuration screen, press the
PROGRAM key and the Circuit maintenance
screen will be displayed. Maintenance screens
are available for Circuit, Suction Group,
Lighting and Alarms.
8.5 Screens
8.5.1 Status Screens
The status screens are shown on the top row of
Figure 18. They are described in detail in the
following paragraphs.
8.5.1.1 Main Status
Figure 19- Main Status Screen
Table 3- Main Status Fields
Field
Explanation
Suct. 1
Suction Group 1
Pressure
Reading
Suct. 2
Suction Group 2
Pressure
Reading
Disc.
Pressure
Discharge
Pressure
Reading
Circuit Status
Circuit 1 through
10 Status.
“-“- Not
configured
“R”-
Refrigeration
“D”- Defrost
“S”-
Temperature is
satisfied
Page 21
