Use extreme caution when accessing SYSTEM INFO functions. Unauthorized or
careless use of these functions could render the automatic operation of the CBL
inoperative. This section on Digital Status screens is informational only there are no
operator level functions or data presented on these screens.
Unless instructed otherwise in this manual, use a bare or gloved finger to operate the
PLC touch screen. Use of writing instruments, screws, nails, or metal tools may damage
the touch screen, rendering the PLC inoperative.
When operating the touch screens on the PLC, use light finger pressure to operate
switches and menus.
Press the GO TO DIGITAL STATUS button (Figure 4, Item 4) to view all of the information from the
boiler, level sensor, and PLC relay outputs. The PLC will show the display in Figure 5. The PLC displays
the status of the PLC relay outputs for each controlled device. The indicators will show a light green
background when ON and a dark green background when OFF. If the GO TO PLC VIEW button is
pressed, the screen in Figure 6 will be displayed.
The PLC displays the status of the boiler inputs, WTS holding tank, level sensor, and nano feed tank level
The maintainer should utilize the BOILER STATUS screen to obtain information for boiler operation. The
PLC will use the information from the tank level sensors to determine operation of the P-3 and P-4 water
Figure 4. Digital Status.