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Page 94
Fail Safe Blocks
In the screen shot above, register 30501 is an analog value that has been mapped from
another module, it has an update interval of 1 minute.
On startup this module will write a value of 16535 into register 30501 and then start
counting down from the "Timeout" value (in this case 600 seconds).
If after 600 seconds, the module still has not received an update from the other module,
register 30501 will be set to the "Fail Value" (in this case 0).
If the "Invalidate on Fail" were ticked, the value would be set to a null or invalidated
value (-).
If this register was mapped to some other location the mapping would be inhibited until
the" Invalid" value was updated with a real value.
The maximum number of Fail Safe blocks you can have is 50.
First Register
Count
Timeout
Initialise at Startup
Startup Value
Invalidate on Fail
Fail Value
Save Changes and
Activate.
Page 94
Figure 58 – Fail Safe Blocks
Fail Safe Blocks
This is the starting register
Indicates the number of registers in the Fail Safe block
This is the starting timeout value in seconds. (setting value to
0 will disable the Timeouts)
Indicates that on startup the Fail Safe Block registers will be
set to the Startup value.
This is the value that the Fail Safe block registers will be set
to on Startup if the "Initialise at Startup" is ticked.
If ticked will set the registers back to an Invalid state (See
above) when failed.
The value the register will be set to if "Invalidate on Fail" is
ticked and the timeout is reached, otherwise this value is
ignored.
Save changes to non-volatile memory, and restarting the
function to load new configuration.
915U-2 Wireless I/O
915U-2 Wireless I/O
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