SECTION 10 – MAINTENANCE
FORM QWC3-NM1
ISSUE DATE:11/20/2020
QUANTECH
173
10
TABLE 29 - BACNET AND MODBUS COMMUNICATIONS DATA MAP (CONT’D)
Imperial SI Point List Description 12345678910
BI17 1298 01,02,03 N/A BD20 0/1 0/1 Sys 2 Comp 3 Run S
01,02,03 N/A BD21 0/1 0/1 Chilled Liquid Type [0=Water, 1=Glycol] S
BI19 1300 01,02,03 N/A BD22 0/1 0/1 Ambient Control Mode [0=Std Amb, 1=Low Amb] S
01,02,03 N/A BD23 0/1 0/1 Local Remote Control Mode [0=Manual, 1=Auto] S
BI21 1302 01,02,03 N/A BD24 0/1 0/1 Display Units [0=Imperial, 1=SI] S
BI22 1303 01,02,03 N/A BD25 0/1 0/1 Lead Lag Control Mode [0=Manual, 1=Auto] S
BI23 1304 01,02,03 N/A BD26 0/1 0/1 Sys 2 Hot Gas Bypass Valve O
1
2
3
4
5
6
7
8
9
10
Ref
Num
BACnet Name
Object
Instance
Modbus
Address
Modbus Data Type
Supported
Modbus
Scaling
Note 5)
N2 Metasys
Engineering Units Point List Code: S = Standard O = Optional N = Not Available
NOTES
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.
3 of 4
08/16/2017
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