Rockwell Automation 2706-MB1 MESSAGEVIEW 421 SOFTWARE MANUAL - Manual (Page 69)

4–21 Planning an Application
Publication 2706-817
Enabling and disabling function keys:
Function keys are enabled only when a message assigned Function
key operations is displayed (activated). For example:
PRESS
F1 - Start Pump
F2 - Stop Pump
F3 - Sound Warning
F1, F2 and F3 are enabled.
F4 through F16 are disabled.
Note: Unless a Function key is specifically enabled for the active
message, it is disabled on the terminal.
!
ATTENTION: As a safety precaution, enable only
the function keys that are used in the message. Unused
function keys should remain disabled, since adverse
effects could result.
All 16 Function keys may be enabled for a single message if
required. However, only one message assigned to Function key
operation can be displayed at a time.
Jog and non-jog modes
Messages with momentary, maintained or latched function keys
enabled may be defined as either jog or non-jog.
•
Messages are defined as non-jog if their Auto Clear attribute is
enabled. Non-jog messages are terminated at the completion of a
Function key operation, including Hold Time. For example:
PRESS
F1 - Start Pump
F2 - Stop Pump
F3 - Sound Warning
The message is terminated after any of F1,
F2 or F3 is pressed and released, and the
Hold Time, if any, expires.
•
Messages are defined as jog if their Auto Clear attribute is
disabled. Jog messages, including their associated Function keys,
remain displayed (active) even after a function key is pressed and
its Wait Time has expired. For example:
PRESS
F1 - Start Pump
F2 - Stop Pump
F3 - Sound Warning The message remains active after any of
F1, F2 or F3 is pressed and released, and
the Hold Time, if any, expires.