[cgmv123]

You're allowed 2 solenoid breakouts, but each has to go into it's own module. On the 4 slot, they'll go into 3 and 4.

In software, the first one (in slot 3) will be module 1 and the second one (in slot 4) will be module 2. You'll use:

public Solenoid(int moduleNumber, int channel)

instead of

public Solenoid(int channel)

to instantiate Solenoid objects.