JOHNSON CONTROLS
166
Form 150.63-NM9
Issue date: 5/20/2021
SECTION 10 – MAINTENANCE
Table 35 - BACnet and Modbus Communications Data Map (cont’d)
Chilled Liquid Type [0=Water, 1=Glycol]
Ambient Control Mode [0=Std Amb, 1=Low Amb]
Local Remote Control Mode [0=Manual, 1=Auto]
Display Units [0=Imperial, 1=SI]
Lead Lag Control Mode [0=Manual, 1=Auto]
BI23 1304 01,02,03 N/A BD26 0/1 0/1 Sys 2 Hot Gas Bypass Valve OOO
10
Ref
Num
BACnet Name
Object
Instance
Modbus
Address
Modbus Data Type
Supported
Modbus
Scaling
(See Note 5)
N2 Metasys
Engineering Units Point List Code: S = Standard O = Optional N = Not Available
Units have Native BACnet MS/TP, Modbus RTU, and N2 communications. No external Gateway is required for these interfaces unless the customer is using Connected Services.
BACnet Object Types: 0 = Analog In, 1 = Analog Out, 2 = Analog Value, 3 = Binary In, 4 = Binary Out, 8 = Device, 15 = Alarm Notification (0-127 are reserved ASHRAE Objects)
WC = Inches of water Column, CFM = Cubic Feet per Minute, FPM = Feet Per Minute, PSI = Pounds per Square Inch, Pa = Pascals, kPa = kiloPascals, PPM = Parts Per Million, kJ/kg = kiloJoules per kilogram
Values that are not applicable due to unit configuration and options will be sent as zero (0).
Modbus values are all of type signed. Scaling values in
x10
(Bold) indicate scaling in metric is x100. Scaling and signing may not be modified in the field.
SCROLL Native Comms
Property of Johnson Controls, Inc.
Subject to change without notice.
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02/11/2020