this program possible?

[TK3]

Is it possible to do the following:

if pH < 8.3 and Salinity < 1.026 and Tank Level is LOW and RO Level is OK, turn ON a pump?

Can you do these types of multi-variable checks?

[kenargo]

Each test would be a separate statement but yes, it is possible. The way you program this is somewhat upside-down. You turn the pump 'ON' and then turn it off if any condition is not met. This would leave the pump 'on' only when all test conditions are correct.

[clp]

Yes, this is possible. Here is the code:

If Time > 00:00 Then TOP ON
If Time > 08:00 Then TOP OFF
If pH > 8.3 Then TOP OFF
If Cond > 53.0 Then TOP OFF
If Switch1 OPEN Then TOP OFF
If Switch2 OPEN Then TOP OFF

Curt