Installation manual

37InRow RC Installation Manual
Building Management System (BMS): The Modbus interface allows each InRow RC to communicate with the
BMS. Use a three-wire cable to connect each InRow RC in turn. Wire a terminator resistor (150 Ohm, 1/4 W)
into the Modbus master and the final InRow RC between Modbus D0 and Modbus D1. This terminator is
included in the installation kit (see “Install kit inventory” on page 8).
Each InRow RC has a three-wire Modbus terminal on the user interface. A connector with screw terminals is
used to attach wiring. See “User interface connectors” on page 33 for specific layout of the user interface.
For information on setup of Modbus parameters, see the InRow RC Operation manual.
Item Description

Termination resistor (provided)

Modbus cable (RS-485)
na1766a
FIRST INROW RC SECOND INROW RC
LAST INROW RC
MODBUS MASTER