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McQuay Micro Tech Open Protocol Driver Manual Page 25 of 35
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Array
Location
Read/
Write/
Both
Field Name
Number
of Bytes
Base
Address
Device
Scaling
Method
8
43 b Clear Ckt#1 Alarm 1 0x091A
1
44 b Evaporator Entering Water Temperature Setpoint 1 0x090D
2
45 b Evaporator Leaving Water Temperature Setpoint 1 0x0905
2
46 b Maximum Chilled Water Reset Setpoint 1 0x090C
2
47 b Network Command 1 0x044F
1
48 b Network Demand Limit 1 0x044D
1
49 b Network Evaporator Leaving Water Temp Reset 1 0x044E
1
50 b Reset Option Setpoint 1 0x090B
1
Table 6 - Equipment Type : Self-Contained Units (SCUs)
Array
Location
Read/
Write/
Both
Field Name
Number
of Bytes
Base
Address
Device
Scaling
Method
9
1 r Air Velocity 1 0x0434
1
2 r Airflow Status 1 0x045C
1
3 r Current Alarm 1 0x0801
1
4 r Previous Alarm 1 0x1301
1
5 r Building Static Pressure 1 0x0435
1
6 r Compressor #1 Alarm 1 0x081C
1
7 r Compressor #1 Operating Hours 2 0x08AF
1
9 r Compressor #2 Alarm 1 0x081D
1
10 r Compressor #2 Operating Hours 2 0x08B2
1
12 r Compressor #3 Alarm 1 0x081E
1
13 r Compressor #3 Operating Hours 2 0x08B5
1
15 r Compressor #4 Alarm 1 0x081F
1
16 r Compressor #4 Operating Hours 2 0x08B8
1
18 r Compressor #5 Alarm 1 0x0820
1
19 r Compressor #5 Operating Hours 2 0x08BB
1
21 r Compressor #6 Alarm 1 0x0821
1
22 r Compressor #6 Operating Hours 2 0x08BE
1
24 r Control Temperature 1 0x0432
1
25 r Cool Stage 1 0x043F
1
26 r Cooling Control Status 1 0x044A
1
27 r Dew Point Temperature 1 0x042F
1
28 r Duct Static Pressure #1 1 0x0435
1
29 r Duct Static Pressure #2 1 0x0434
1
30 r Economizer Enable 1 0x045A
1
31 r Economizer Operating Hours 2 0x08C4
1
33 r Economizer Position 1 0x042E
1
34 r Entering Water Temperature 1 0x042C
1
9
See Appendix A.1
.