McQuay Micro Tech Open Protocol Driver Manual Page 21 of 35
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Array
Location
Read/
Write/
Both
Field Name
Number
of Bytes
Base
Address
Device
Scaling
Method
6
30 r Circuit #2 Condenser Pressure 2 0x0469
2
32 r Circuit #2 Alarm Conditions: Condenser Pressure
2 0x082A
2
34 r Circuit #2 Alarm Conditions: Evaporator Pressure
2 0x0828
2
36 r Circuit #2 Alarm Conditions: Liquid Line Tempe 2 0x082E
6
38 r Circuit #2 Alarm Conditions: Suction Temperature
2 0x082C
6
39 r Circuit #2 Current Alarm 1 0x0832
1
41 r Circuit #2 Evaporator Pressure 2 0x0465
2
43 r Circuit #2 Liquid Line Temperature 2 0x047B
6
44 r Circuit #2 Previous Alarm 1 0x0834
1
45 r Circuit #2 Status 1 0x0429
1
47 r Circuit #2 Subcooling Temperature 2 0x049D
2
49 r Circuit #2 Suction Temperature 2 0x0477
6
51 r Circuit #2 Superheat Temperature 2 0x0495
2
53 r Compressor #1 Operating Hours 2 0x0862
1
55 r Compressor #1 Starts 2 0x086A
1
57 r Compressor #2 Operating Hours 2 0x0864
1
59 r Compressor #2 Starts 2 0x086C
1
61 r Compressor #3 Operating Hours 2 0x0866
1
63 r Compressor #3 Starts 2 0x086E
1
65 r Compressor #4 Operating Hours 2 0x0868
1
67 r Compressor #4 Starts 2 0x0870
1
69 r Condenser Entering Water Temperature 2 0x0470
6
71 r Condenser Leaving Water Temperature 2 0x0472
6
73 r Evaporator Entering Water Temperature 2 0x046E
6
75 r Evaporator Leaving Water Temperature 2 0x0461
6
76 r Heat/Cool Switch 1 0x08B4
1
78 r OaT 2 0x047D
6
79 r Stage of Capacity 1 0x042B
1
80 r Unit % RLA 1 0x0474
1
81 r Unit Status 1 0x0427
1
82 b Clear Circuit #1 Alarm 1 0x091A
1
83 b Clear Circuit #2 Alarm 1 0x091B
1
84 b Condenser Leaving Water Temperature Setpoint
1 0x097D
1
85 b Evaporator Entering Water Temperature Setpoint
1 0x090D
4
86 b Evaporator Leaving Water Temperature Setpoint
1 0x0905
4
87 b Maximum Water Reset Setpoint 1 0x090C
4
88 b Network Command 1 0x044F
1
89 b Network Demand Limit 1 0x044D
1
90 b Network Leaving Water Temperature Reset 1 0x044E
1
91 b Reset Option Setpoint 1 0x090B
1