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Switch Programming is Lost When Panel is Disconnected

If a switch is programmed to control loads in a panel and it is taken off the bus or reprogrammed (power loss, disconnected, readdressed) and one goes in to the button programming screen for the switch, it will show a blank screen since the LCP no longer exists. When you exit the screen, the blank programming data is written to the switch, and hence the switch 'loses' the programming.

This is because when programming a switch, one adds the desired LCP# & Load# to be controlled but the switch only saves the load # and the address of the relay board the load belongs to. The switch then looks at the “Bus Map” which allows it to display the correct LCP# & Load#.

Bus Map (or Panel Switch Types) is just a feature that allows one to name and identify the type of device on a specific address.

 

Example Scenario #1

  1. One programs a button to toggle LCP1:R1
  2. LCP1 is on address #1
  3. LCP1 was moved to a different address
  4. The button will now display a blank screen because the LCP is no longer present on address #1

 

Example Scenario #2

  1. One programs a button to toggle LCP1:R1
  2. LCP1 is on address #1
  3. LCP1 was modified to show as LCP2 @ address #1 on “Bus Map”
  4. The button will still control the exact same load, but it will now display “LCP2:1” as the load being controlled





In DTC firmware version 4.25, if a switch button is programmed to control loads in a panel and it is taken off the bus or reprogrammed (power loss, disconnected, readdressed) and someone goes in to the programming screen for the button on a switch, it will show a blank screen since the LCP no longer exists. When you exit the screen, the blank programming data is written for the switch, and hence the switch 'loses' the programming for the loads it controls. 

To sum it up, here is an example: 

1. Button 1 on SW#3 is programmed to toggle LCP1: R1 - R4

2. LCP1 no longer appears on the bus (disconnected or power is lost)

3. One goes in to "Program Switch" -> SW#3 -> Button 1

4. The switch will show no programming. 

5. When one exits the screen, the blank information will be stored in the switch's memory.
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