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Version 1.73 Copyright © 1997 Link Communications Inc. 1/18/97
164: Recall Software Version
This command allows you to recall the software version that the controller is running, which
might be useful when calling for technical support. Do not be concerned if the controller
software version is later than your manual version, as many of the changes between software
versions do not require manual changes.
<164>
Parameters:
- 164 is the default command name
165: Reset COP Watchdog Timer
This command allows you to reset the COP watchdog timer from within a macro. The only
time this should be needed is if you are executing an extremely long macro sequence (many
macros calling each other). If such a macro sequence takes too long to execute, it will cause
the controller to reset, because the controller thinks that something is wrong. Executing this
command in the middle of such a long macro sequence will tell the controller that everything is
ok; it is just taking a long time.
<165>
Parameters:
- 165 is the default command name
Advanced Information:
The COP timer is actually a hardware timer (in the DS1232 chip) that automatically
resets the controller if the controller gets stuck in a loop. To keep it from resetting the
controller, the sofware must pulse a pin on the chip at least every second or so to tell the chip
that the Computer is Operating Properly (hence the name COP timer). On our controllers, that
pin is pulsed in the main loop, from which all of the procedures and functions are called. If
there is a bug in any of those procedures or functions that makes it take longer than a second or
so (a long time for a computer) to return to the main loop, the COP timer resets the controller.
It is possible to write enough long macros that call other long macros so that when the
controller executes them it takes longer than a second and thereby fools the COP timer into
thinking that there is a problem and causes the controller to reset. If that happens, you can call
command 165 in the middle of those long macros to manually tickle the COP and keep it from
resetting the controller. That is the only use for this command.
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