Dynapro Technologies Dynapro ET TCS, Application Developer'S Manual

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The Display Activity command turns the display on or off, or programs an automatic timeout (the
screen is automatically turned off) following periods of inactivity.
CAUTION
Setting Display Activity off then saving the Setup Screen is a relatively common source of confusion for new TCS
operators. The Setup Screen is always available regardless of the setting of Display Activity, so in case a dark
screen makes the TCS appear inoperative, be sure to check the setting.
The automatic timeout is a feature that turns off the display during periods of inactivity longer
than 30 minutes, thereby extending the life of the phosphor on the display.
•
When the display activity is set to "on", the display stays lit (even during extended periods of
inactivity).
•
When the display activity is set to "off", the screen is turned off. Even though the display
appears blank, data continues to be processed normally by the TCS just as if the display were
turned on. The display remains off, even if there is user or host activity, until the display
activity is changed to "on" or "timeout", or the Setup Screen is entered.
NOTE
Regardless of the display activity setting, the screen always turns on when the Setup Screen is entered.
•
When the display activity is set to "timeout", the display turns off if 30 minutes elapse
without user or host activity. After the display has timed out, any activity by the user or host
causes the display to turn back on. For example, the screen turns back on if the user presses
the any key or touches the touch panel, or if the host sends a character or command.
After timeout has occurred, the first user activity sensed by the TCS (including activation of the
Setup Screen) turns on the screen and starts a new timeout cycle, but the TCS does not interpret
this activity as a command to be sent to the host. For example, if the user wants to transmit the
space character to the host after the display has timed out, he must press any key or touch the
display, then press the space bar. However, the first activity from the host after a timeout has
occurred causes the screen to turn on and is interpreted as a command. If the user activity occurs
on a portion of the TCS that is locked out, then the screen is not turned on after a timeout has
occurred. The touch panel, keyboard, or Setup Screen can be locked by Remote commands.
NOTE
If display activity is set to "off" and saved with a Save Setup, the next time power is applied to the TCS, the
TCS starts up with the screen off
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