JOHNSON CONTROLS
159
SECTION 10 – MAINTENANCE
FORM 150.73-NM1
ISSUE DATE: 09/04/2020
10
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 #.
TABLE 44 - SERIAL COMMUNICATION ANALOG VALUE DATA
AV BACNET NAME ANALOG VALUE DESCRIPTION
1 REM_SETP
Setpoint
Cooling Setpoint (HP Only), 99 = Auto
(40 °F - 70 °F)
2 SP_REM_SP_S1 SYS 1 Setpoint (Suction Pressure Control)
3 LOAD_LIMIT Load Limit Stage (0, 1, 2)
4 REM_CR Cooling Range (DAT Mode Only)
5 SP_REM_SP_S2 SYS 2 Setpoint (Suction Pressure Control)
6 REM_SP_HEAT Heating Setpoint (HP Only) 99 = Auto (95 °F - 122 °F)
7 HP_MODE Mode (HP Only) (0 = Panel, 1 = Cooling, 2 = Heating)
Serial Communication Binary Value Data
This data can be read and modified using a BACnet
or Modbus network connection. The Modbus Register
Address for these points is 1537 + BV #.
TABLE 45 - SERIAL COMMUNICATION BINARY VALUE DATA
BV BACNET NAME BINARY VALUE DESCRIPTION
1 START_STOP Start / Stop Command
2 SS_SYS1 SYS 1 Start / Stop Command (Suction Pressure Control)
3 SS_SYS2 SYS 2 Start / Stop Command (Suction Pressure Control)
Serial Communication Analog Input Data
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 #.
TABLE 46 - SERIAL COMMUNICATION ANALOG INPUT DATA
AI BACNET NAME ANALOG INPUT DESCRIPTION
1 LCHLT Leaving Chilled Liquid Temp
2 RCHLT Return Chilled Liquid Temp
3 DAT Discharge Air Temp (Cond Unit Only)
4 S1_SUCT_TEMP SYS 1 Suction Temperature (EEV And Cond Unit Only)
5 OAT Ambient Air Temperature
6 S1_SUCT_SH SYS 1 Suction Superheat (EEV Only)
7 S1_RUN_TIME SYS 1 Run Time (Seconds)
8 S1_SUCT_PR SYS 1 Suction Pressure
9 S1_DSCH_PR SYS 1 Discharge Pressure
10 S1_CIR_TEMP SYS 1 Cooler Inlet Refrigerant Temperature (R-407C Only)
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