Apex Classic Setup and Programming Guide v2.2
Page
59
5
Input 5
6
Input 6
7
Reserved
8
Ground
Table 4 – Switch Input Connector Pin-out
The pin-out of the connector is shown in Figure 6 - Switch Input Connector.
Connect switches to the AquaController Apex by connecting one wire from the
mechanical switch to the ground pin (pin 8), and the other wire from the switch
to one of the six digital inputs (pin 1-6). Connections can be easily made using a
Neptune I/O Breakout box available at your local Neptune Retailer. The breakout
box features spring loaded connectors to make connections easy without tools or
soldering.
The Apex and accessory inputs are TTL level (5V) inputs with internal pull-up
resistors. With nothing connected, the switch inputs will indicate OPEN (Logic 1 -
5V). When connected to Ground (Pin 8) the switch will indicate CLOSED (Logic 0 -
0V).
NOTE: If a Legacy Port Expansion PX1000 is connected to the Apex Base Module,
inputs 3, 4, 5 and 6 are not available. However, the PX-1000 includes 6
additional inputs.
Switch Inputs are programmed using the If Switch command. For example, if you
wanted to turn a pump on when a float switch closes, you would add this
command to the pump outlet program:
If Switch1 CLOSED Then ON
See the section titled Appendix 3 – Programming Reference and Appendix 4 –
Advanced Programming Examples for more information.
IDENTIFYING PORTS AND SWITCHES ON EXPANSION MODULES
Probes and switches on AquaController Apex Base Modules are identified as pH,
ORP, Temp, Switch1, Switch2, etc.
Probes and switches on Apex Probe Modules (PM1, PM2, etc.) are identified with
and “X” and the AquaBus number assigned to the Probe Module. For example,
