Installing the MPC Open XPMPC Open XPMPC Open XPIO48/816 CARRIER CORPORATION ©2019Installation and Start-up Guide All rights reserved13To attach MPC Open XPIO expanders1 Wire the MPC Open XP's Xnet Remote Expansion port to the same port on the expander.Connect:○ Gnd to Gnd○ Xnet- to Xnet-○ Xnet+ to Xnet+NOTE To use more than one expander, wire their Xnet Remote Expansion ports together in a daisy-chainconfiguration. The MPC Open XP must be the first device on the expander network.2 Set the Xnet baud rate to 500 kbps in the i-Vu® interface on the driver's Xnet page.3 If the expander network has more than one expander, place the Term jumper in the down position or removeit from all expanders except the one at the end of the expander network. The Term jumper must be in the upposition on the expander at the end of the network.To set expander's addressYou must give the expanders an address that is unique on the expander network.1 If wired for power, turn off the expander's power and the attached MPC Open XP's power.2 Set the expander's address on the rotary switch.EXAMPLE If the controller’s address is 2, point the arrow on the switch to 2.NOTE The MPC Open XP can have a maximum of 3 expanders. You MUST address the expanders as 1, 2,and 3. Higher addresses will not work.3 Turn on the expander's power, then turn on the attached MPC Open XP's power. The MPC Open XP reads thepowered expander's address each time you turn on the MPC Open XP.CAUTION The first time the controller communicates with an expander, it triggers a software download. Thismay occur if the expander(s) are blank (not a normal condition) and in cases where the controller’s driver hasbeen updated. During that time, the red Error LED and the green Run LED on the expander(s) flash in sequence.This process may take several minutes to complete. Do not disconnect power or communications wiring duringthis download.