DIAGNOSTICS BUTTON

The Diagnostics button displays analog and digital I/O status of the Burner Control. A snapshot of the diagnostic status is displayed and updated once per second as it changes in the control.

The digital I/O data is displayed as LEDs that are either on (green) or off (red) (See Figure 72). Not all digital I/O can be displayed at the same time on the page, so a horizontal scroll bar is used to move the view left and right to show all digital I/O data.

Figure 72.  DIAGNOSTICS PAGE (DIGITAL I/O)

SYSTEM CONFIGURATION (S7999B OI DISPLAY ONLY)

The OI Display has some functions related to general configuration for the control in the end user installation. Pressing the Display Refresh button invokes a search procedure (see Figure 74). A new R7910A Hydronic Control or R7911 Steam Control is identified by “Unknown” status next to its name in the boiler system list (see Figure 75). “Unknown” indicates that configuration data has not been retrieved from the control yet.

Figure 74.  SYSTEM REFRESH

The control analog I/O can also be viewed on the OI Display. A snapshot of the diagnostic status is displayed and updated as it changes in the control.

The analog I/O data is displayed as bar charts with I/O level represented in the I/O range (see Figure 73) Analog I/O that is not enabled for the installation displays a blank I/O level. Not all analog I/O can be displayed at the same time on the page, so a horizontal scroll bar is used to move the view left and right to show all analog I/O status.

Figure 75.  SYSTEM CONFIGURATION PAGE

The control connected to the Modbus network is indicated to the user after the search procedure has concluded.

Once the control is located it must be synchronized with the OI Display before it can be displayed. New controls are not displayed on the Home page until this synchronization is performed.

Figure 73.  DIAGNOSTIC PAGE (ANALOG I/O)

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A.O. Smith 2000, 3400, 2600, 1700 instruction manual Diagnostics Button, System Configuration S7999B OI Display only

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