Page 16 of 97 PN: 106417-05
3.4 Apex, Alpine, ASPEN, Phantom-X or Raptor with Panasonic Display
Figure 3-7: Apex, Alpine, ASPEN, Phantom-X or Raptor with Panasonic Display Modbus
RS485 Wiring
The Modbus communication connects to the same RJ45 port that is used by the boiler-to-boiler communication.
Connect one end of the RJ45 cable to the boiler and cut off the other end of the cable to access the individual wires
of the RJ45 cable. Wire the RJ45 cable as shown above.
When wiring to Sage/Sola without the RJ45 cable make the following connections:
• Connect MB2’s terminal A (RS-485+) to Pin 1 (RS-485+) on the ProtoNode.
• Connect MB2’s terminal B (RS-485-) to Pin 2 (RS-485-) on the ProtoNode.
• Connect MB2’s terminal C (ground) to Pin 3 (ground) on the ProtoNode.