McQuay Micro Tech Open Protocol Driver Manual Page 20 of 35 FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldSer ver.com
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Array
Location
Read/
Write/
Both
Field Name
Number
of Bytes
Base
Address
Device
Scaling
Method
5
115 b Communications Signal 1 0x047D
1
116 b Outdoor Air Temperature - BAS 1 0x0473
5
117 b Master/Server Setpoint 1 0x093C
1
118 b Lead/Lag Mode Setpoint 1 0x093D
1
119 b Enable Lag Setpoint 1 0x093E
1
120 b Disable Lag Setpoint 1 0x093F
1
121 b Lag Standby Setpoint 1 0x0942
1
122 b Lead/Lag Switch Setpoint (Day) 1 0x0948
1
123 b Lead/Lag Switch Setpoint (Hour) 1 0x0949
1
124 r Lead/Lag Status 1 0x0401
1
125 r Lead Unit 1 0x0402
1
126 r Lead Unit Stat us 1 0x0403
1
127 r Lag Unit Status 1 0x0404
1
128 r Lead Motor Cur rent 1 0x0405
1
129 r Lag Motor Cur rent 1 0x0406
1
130 r Lead Status 1 0x0407
1
131 r Lag Status 1 0x0408
1
132 b Chiller Control mode 1 0x900 1
133 b Chilled Water Temperature Local Setpoint 1 0x901 4
134 r Chilled W ater Temperature – Active Setpoint 1 0x905 4
Array
Location
Read/
Write/
Both
Field Name
Number
of Bytes
Base
Address
Device
Scaling
Method
6
3 r Circuit #1 Condenser Approach Temperature 2 0x0497
2
5 r Circuit #1 Condenser Pressure 2 0x0467
2
7 r Circuit #1 Alarm Conditions: Condenser Pressure
2 0x0822
2
9 r Circuit #1 Alarm Conditions: Evaporator Pressure
2 0x0820
2
11 r Circuit #1 Alarm Conditions: Liquid Line Temp 2 0x0826
6
13 r Circuit #1 Alarm Conditions: Suction Temperature
2 0x0824
6
14 r Circuit #1 Current Alarm 1 0x0831
1
16 r Circuit #1 Evaporator Pressure 2 0x0463
2
18 r Circuit #1 Liquid Line Temperature 2 0x0479
6
19 r Circuit #1 Previous Alarm 1 0x0833
1
20 r Circuit #1 Status 1 0x0428
1
22 r Circuit #1 Subcooling Temperature 2 0x049B
2
24 r Circuit #1 Suction Temperature 2 0x0475
6
26 r Circuit #1 Superheat Temperature 2 0x0493
2
28 r Circuit #2 Condenser Approach Temperature 2 0x0499
2
6
See Appendix A.1
.