Data Aire’s dap4 Modbus TCP/IP
Document:600‐000‐961version4.0 6
II. Modbus TCP/IP Points List
Note: 1.Dividethevalueby10forthedecimalvaluereading.
2.Allpointsinthislistareappliedtodap4softwareversion1.11orlater.Somepointsarenotapplied
ifyouhaveolderdap4softwareversion.
Point
Index
Description
Read/
Write
VariableName
Data
Type
Modbus
TCP/IP
1 Temperature of return air R Ret_Air_Tmp A 30002
2 Maximum Return air temp in last 24hrs R Maximum A 30003
3 Minimum Return air temp in last 24hrs R Minumum A 30004
4 Temperature setpoint R/W Temp_Setpoint A 40005
5 Amount from setpoint before a comp is staged on R/W Temp_Deadband A 40006
6 Humidity Sensor Calibration R Ain_offs A 30007
7 Return Temperature Sensor Calibration R Ain_offs A 30008
8 Temperature of chilled water* R CW_Tmp A 30009
9 Temperature of discharge air* R Disch_Air_Tmp A 30010
10
Discharge Temperature Sensor Calibration - Optional discharge air
temperature sensor required (B9)* R Ain_offs A 30011
11
Chilled Water Temperature Sensor Calibration - Optional chilled water
temperature sensor required (B10)* R Ain_offs A 30012
12 Temperature setpoint for Energy saver chilled water* R/W EngSaver_Setpoint A 40013
13 Value of the analog input* R Opt1_Analog A 30014
14 Value of the analog input* R Opt2_Analog A 30015
15 Value of the Auxillary analog* R Opt3_Analog A 30016
16 Value of the analog input* R Opt4_Analog A 30017
17 Analog Sensor 1 Minimum Value* R Y1 A 30018
18 Analog Sensor 1 Maximum Value* R Y2 A 30019
19 Analog Sensor 1 Calibration* R Ain_offs A 30020
20 Analog Sensor 2 Minimum Value* R Y1 A 30021
21 Analog Sensor 2 Maximum Value* R Y2 A 30022
22 Analog Sensor 2 Calibration* R Ain_offs A 30023
23 Analog Sensor 3 Minimum Value* R Y1 A 30024
24 Analog Sensor 3 Maximum Value* R Y2 A 30025
25 Analog Sensor 3 Calibration* R Ain_offs A 30026
26 Analog Sensor 4 Minimum Value* R Y1 A 30027
27 Analog Sensor 4 Maximum Value* R/W Y2 A 40028
28 Offset for Outside Air Humidity sensor* R/W Ain_offs A 40029
29 Temperature setpoint for cooling in economizer mode* R/W Econ_Cl_Setpoint A 40030
30 Temperature deadband for cooling in economizer mode* R/W Econ_Cl_Deadband A 40031
31 Temperature setpoint for heating in economizer mode* R/W Econ_Ht_Setpoint A 40032