how to pass a value under a condition?

[J V]

Hello,

I am trying to program the following situation. Consider two values A and B.
How can I pas some analogue value C (when C changes), but only if A=B?

An analog memory works on the rising edge of the trigger, but A nor B changes value...

Thanks!

[Christian Fenzl]

An analog output always has a value.

If A EQUAL B condition to the S input of an Analog Selector block. By the S (Select) input you switch between 0 and C.

[Christian Fenzl]

PS: Not tried, but if you connect a Memory to the output of the Analog Selector, and input this Memory to the first input of the Analog Selector, you may have saved the last value.

[J V]

Yes, this works! I tried with an EIB switch and a +/- selector. Flip the switch one way, and the +/- selector's value is passed through the multiplexer. Flip the switch the other way and the old value is kept no matter what happens to +/- selector. Flipping the switch back immediately passes the current value of the +/- selector.
Perfect!
Thanks!!!

[J V]

Just to confirm: it also works in the situation where I need it, so not just in the artificial example.

[J V]

If A EQUAL B condition to the S input of an Analog Selector block. By the S (Select) input you switch between 0 and C.

The thing is: I don't want to switch between 0 and C, but between the "new" value of C and the old value of C.

C changes ---- if A==B---> pass new value
C changes ---- if A<>B---> keep old value

I'll try your approach with the memory and the selector... seems like it might work... I'll report back :-)
Thanks!

edit: the approach works!