Quantech QTC3040T User Manual

Quantech
168
Form QTC3-NM1
Issue date: 12/19/2023
Section 7: Unit controls
The table below shows set-up requirements for each
communication protocol.
Table 21: Values Required for BAS Communication
Setting description
Protocol
BACnet MS/TP Modbus RTU
5
YORKTalk 2 N2
6
De modier address 0 to 41943
3
1 -1 0 to 41943
3
De modier o󰀨set 0 to 99
4
0 N/A 0 to 99
4
P1 protocol BACNET N/A N/A 9n2
P1 manual MAC address 0-127
1
N/A N/A 0-127
1
P1 baud rate
9600 To 76800 or
Auto Selectable
1
N/A N/A 9600
P1 parity NONE N/A N/A NONE
P1 stop bits 1 N/A N/A 1
P2 protocol N/A MODBUS SVR N/A N/A
P2 manual MAC address N/A 0-127
1
N/A N/A
P2 baud rate N/A 19,200
2
N/A N/A
P2 parity N/A NONE
2
N/A N/A
P2 stop bits N/A 1 N/A N/A
P2 HW select bit N/A
RS-485 or
RS-232
1
N/A N/A
Reset real time error N/A N/A N/A N/A
P1 hw select bit N/A N/A N/A N/A
Chiller ID N/A N/A 0 N/A
1. As required by network. 2. Or other as required by network. 3. Number is multiplied by 100, set as required by network.
4. Number is added to de modier address, set as required by network.
5. Unit operating software version C.Mmc.13.03 or later required for Modbus Protocol.
6. Unit operating software version 04 (C.MMC.13.04, C.MMC.14.04, or C.MMC.16.04) or higher required for N2 protocol functionality.
BACnet and Modbus communications
Chiller data that can be read and modified using spe-
cific BACnet or Modbus Register Addresses; and the
data associated with the addresses, is outlined in the
following description:
Analog write points
This data can be read and modified using a BACnet
or Modbus network connection. The Modbus Register
Address for these points is 1025 + AV #.
Binary write points
This data can be read and modified using a BACnet
or Modbus network connection. The Modbus Register
Address for these points is 1537 + BV #.
Analog read only points
This data can be read using a BACnet or Modbus net-
work connection and can NOT be modified using this
connection. The Modbus Register Address for these
points is 513 + AI #.
Binary monitor only points
This data can be read using a BACnet or Modbus net-
work connection and can NOT be modified using this
connection. The Modbus Register Address for these
points is 1281 + BI #.
See Table 22 on page 169 for complete list of BACnet
and Modbus registers.
Go to the Johnson Controls Chillers
Knowledge Exchange website for the
most up-to-date SC-EQ BAS point maps:
https://docs.johnsoncontrols.com/chill-
ers/. You can also contact your local
Quantech oce for a copy of the data
map.

Quantech QTC3040T Specifications

General

Brand	Quantech
Model	QTC3040T
Category	Chiller
Language	English