Add a Wattkraft Parkcontrol park controller with just its address

Adding a Wattkraft Parkcontrol park controller now takes only its address, with no login needed. You then see the active-power setpoints from your grid operator and from your direct marketer, which of them is in force right now, and whether the link to the direct marketer is up. Your plants receive this with their next agent update.

• Before you save anything, a test read in the add-device step shows you the values the controller is sending.
• The controller's grid-connection meter is not read yet.
• If a scan of your network reports the controller as another vendor, you have to add it by hand.