Quantech QWC3050T-200T, Installation Operation & Maintenance

Page: 170 / 186

FORM QWC3-NM1
ISSUE DATE: 11/20/2020
SECTION 10 – MAINTENANCE
QUANTECH
170
Reboot required (cycle power) after set-
tings are changed.
The table below shows the real time error numbers that
may be encountered during communication setup and a
description of each.
TABLE 28 - REAL TIME ERROR NUMBERS
ERROR
NUMBER (##)
DESCRIPTION
0 ALL OK
1 DATUM TYPE OK TEST FAILED
2 ENGLISH TEXT TOO LONG
3 FLOATING POINT EXCEPTION
4 GET PACKET FAILED
5 GET TYPE FAILED
6 INVALID UNIT CONVERSION
7 INVALID HARDWARE SELECTION
8 REAL TIME FAULT
9 SPANISH TEXT TOO LONG
10 THREAD EXITED
11 THREAD FAILED
12 THREAD STALLED
13 IO BOARD RESET
14 BRAM INVALID
15 BACnet SETUP FAILED
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 29 on page 171 for complete list of BACnet
and Modbus registers.
The latest data map information is listed
on the Quantech website.
Communications Data Map Notes:
(See
Table 29 on page 171
)
1. IPU II based units are configured for Native BAC -
net MS/TP and Modbus RTU communications.
Microgateway or E-Link not required for these
two communication protocols.
2. BACnet Object Types: 0= Analog In, 1 =
Analog Out, 2= Analog Value, 3= Bina-
ry In, 4 = Binary Output, 5= Binary Value,
8= Device, 15 = Alarm Notification (0 through
127 are reserved ASHRAE Objects).
3. WC= Inches of water column; CFM = Cubic Feet
per Minute; FPM = Feet per Minute: PSI = Lbs
per square inch; Pa = Pascals; kPa = Kilopascals;
PPM = Part per Million; kJ/kg = Kilojoules per
Kilogram.
4. Water Cooled Scroll units use the same firmware
as Air Cooled Scroll units, ignoring Fan Control.