Unit data that can be read and modified using specific Modbus Register Addresses; and the data associated with the
addresses, is outlined in the following description:
SERIAL COMMUNICATION ANALOG VALUE DATA
This data can be read and modified using a BACnet or Modbus network connection. The Modbus Register Address
for these points is 1025 + AV #.
SERIAL COMMUNICATION BINARY VALUE DATA
This data can be read and modifi ed using a BACnet or Modbus network connection. The Modbus Register Address
for these points is 1537 + BV #.
SERIAL COMMUNICATION BINARY INPUT DATA
This data can be read using a BACnet or Modbus network connection and can NOT be modified using this
connection. The Modbus Register Address for these points is 1281 + BI #.
1
-
44
Form 201.26.OI1(11/09)
AV
BACNET NAME
ANALOG VALUE DESCRIPTION
SETPOINT COOLING SETPOINT
WATER 4.4 °C TO 21.1°C
GLYCOL -7.2°C TO 21.1°C
LOW TEMP GLYCOL -13.3°C TO 21.1°C
37.2 = Handback to panel when under options display units are set to SI
or 99 when set to imperial
2
SP_REM_SP_S1
NOT USED
3
LOAD_LIMIT LOAD LIMIT
STAGE
(0, 1, 2)
4
REM_CR COOLING RANGE
NOT USED
5
SP_REM_SP_S2 SYS 2
NOT USED
HEATING SETPOINT 30 °C - 52°C
537.2 = Handback to panel when under options display units are set to SI
or 999 when set to imperial
7
HP_MODE
MODE (0 = PANEL, 1 = COOLING, 2 = HEATING)
(YCWL Heatpump only)
1
REM_SETP
6
REM_SP_HEAT
BV
BACNET
NAME BINARY VALUE DESCRIPTION
1
START_STOP
START / STOP COMMAND
BI
BACnet NAME
BINARY INPUT DESCRIPTION
1
S1_ALARM
SYS 1 ALARM
2
S2_ALARM
SYS 2 ALARM
3
EVAP_HTR
EVAPORATOR HEATER (YLAA/YLAE only)
4
EVAP_PUMP
EVAPORATOR PUMP STATUS
5
S1_C1_RUN
SYS 1 COMP 1 RUN
6
S2_C1_RUN
SYS 2 COMP 1 RUN
7
S1_LLSV
SYS 1 LIQUID LINE SOLENOID VALVE
8
S1_MODE_SV
NOT USED
9
S1_HGBV
NOT USED
10
S1_BHS
NOT USED
11
S1_C2_RUN
SYS 1 COMP 2 RUN
12
S2_C2_RUN
SYS 2 COMP 2 RUN
13
S2_LLSV Sys 2
SYS 2 LIQUID LINE SOLENOID VALVE
14
S2_MODE_SV
NOT USED
15
LEAD_SYS
LEAD SYSTEM (0 = SYS 1, 1 = SYS 2)
16
S1_C3_RUN
SYS 1 COMP 3 RUN
17
S2_C3_RUN
SYS 2 COMP 3 RUN
18
CH_LIQ_TYPE
CHILLED LIQUID TYPE (0=WATER, 1=GLYCOL)
19
AMB_MODE
NOT USED
20
CNTL_MODE
LOCAL/REMOTE CONTROL MODE (0=LOCAL, 1=REMOTE)
21
DATA_UNIT
UNITS (0=IMPERIAL, 1=SI)
22
AUTO_LL
LEAD/LAG CONTROL MODE (0=MANUAL, 1=AUTO)
23
S2_HGSV
NOT USED
