104
<TO
n
>
TimeOut
System
Description
Activate a timer that warns if communications from the host ceases for (
n
x 10) Seconds
Parameters
n
= 0 to 255
- Multiples of 10 Seconds
Initial Value
0, no timeout active
Modes
All Modes
Notes
This command activates a timer that warns via a screen message that there has been no
communication from the host for a defined period of time.
The parameter
n
sets a timeout period of
n
x 10 seconds.
n
= 0 deactivates the timeout function.
In order to reset the timer, a valid command with a correct checksum (if used) must be received and
acknowledged by the display. In a multidrop application, each individual display must be
communicated to within their timeout period.
Uses
The <TO> command allows:
•
Users to be warned that the message displayed may be out of date
Example
<TO2>
Sets a timeout period of 2 x 10 = 20 seconds
Assume that the following screen was being displayed
If no communication was received for more than 20 seconds the
warning screen will alternate every second with the original screen.
When a communication is received, the warning message will not
be displayed again until the timeout period has been exceeded once
again.
Alternating each second with
Gotchas!
In normal operation, make sure that the host communicates at least once every timeout period. The
<RS> Request Status command may be used for this purpose
See Also
RB
ReBoot
RS
Request Status
