Johnson Controls The CGM09090 General Purpose Application MS/TP Controllers (CGs)

Application

The CGM09090 and CGM04060 General Purpose

Application MS/TP Controllers (CGs) are equipment

controllers that run pre-engineered and user

programmable applications, and provide the inputs and

outputs required to monitor and control a wide variety of

HVAC and other facility equipment. CG series controllers

operate on an RS-485 BACnet® MS/TP Bus as BACnet

Advanced Application Controllers (B-AACs) and integrate

into Johnson Controls® and third-party BACnet systems.

CG series controllers include an integral real-time clock,

which enables the controllers to monitor and control

schedules, calendars, and trends, and operate for

extended periods as stand-alone controllers when offline

from the Facility Explorer® system network.

Communications Protocols

The CG series controllers can communicate using

BACnet MS/TP, N2. or wireless Zigbee®. By default,

these controllers communicate using the BACnet MS/

TP protocol. The BACnet protocol is a standard for ANSI,

ASHRAE, and the International Standards Organization

(ISO) for building controls.

The CG series controllers can be used as functional

replacements for legacy N2 controllers. The N2-capable

MS/TP equipment controller models provide a cost

effective upgrade and modernization path for customers

with existing N2 controllers. For installation and

commissioning support, and tips for efficient and safe

replacement, refer to the Modernization Guide for Legacy

N2 Controllers (LIT-12012005) and the controller-specific

documentation. For information about mapping N2

Objects in controllers with switchable communications

protocols, refer to the N2 Compatibility Options chapter of

the Controller Tool Help (LIT-12011147).