Chapter 1
DTAM Plus OverView
1–4
Figure 1.3 shows the DTAM Plus keypad.
Figure 1.3
Keypad
MAIN
MENU
PREV
MENU
PREV
NEXT
F
Y
N
1
2
3
4
5
6
7
8
9
0
EXP
+/–
CE
The keys on the DTAM Plus keypad are color coded by function. Blue keys
are for navigation and operator responses; dark grey keys control display and
format; and light grey keys are for numeric entry.
Table 1.A
Key Functions
Key
Function
Key
Function
MAIN
MENU
Returns to the main menu of an application.
If the ALARM LED is flashing, the MENU key is not functional
until you press Y to acknowledge the alarm.
Adjusts the contrast of the LCD display in 4 steps.
Note: Not available on VFD displays.
PREV
MENU
Steps back through menus in an application.
If the ALARM LED is flashing, the PREV MENU key is not func-
tional until you press Y to acknowledge alarm.
•
Adjusts the brightness (LED backlighting) of LCD displays in
4 steps.
•
Adjusts the character brightness on VFD displays in 2 steps.
PREV
Steps back through a sequence of linked screens.
Deletes the previous character.
NEXT
Steps forward through a sequence of linked screens.
EXP
•
Sends the current screen to the serial printer.
•
Allows entry of exponential numbers.
Note: The F key enables EXP key. See Chapter 3 for details.
F
Access the Function menu for performing terminal operations.
CE
Clears an entire value during data entry. You cannot clear an
entry after pressing Enter, the value has been sent to controller.
Y
•
Enters a Yes response.
•
Acknowledges an alarm.
•
Sets the status of a bit in a data entry screen.
•
Increments the Elem and SElem fields in the P–A/D.
+/–
Toggles a data entry value between positive or negative.
N
•
Enters a No response.
•
Clears the status of a bit in a data entry screen.
•
Decrements the Elem and SElem fields in the P–A/D.
Enters a decimal point.
0
9
Enters a number during data entry or selects a numbered
menu item.
Sends the entered data or default value to the processor.
Keypad
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