McQuay Micro Tech Open Protocol Driver Manual

Page 18 of 35

Appendix A.2. Data Field Name Tables

If you do not know the field name it is possible to read the device by specifying the address only. More information is provided in Appendix A.4

Table 2 – Equipment Type: 200CFC 200 Series Centrifugal Chiller

Array

Read/

Field Name

Number

Base

Device

Write/

Scaling5

Location

of Bytes

Address

 

 

 

Both

 

 

 

Method

1

r

Model

3

0x0A08

1

4

r

Refrigerant

1

0x0A0B

1

5

r

Units of Measure

1

0x0A0C

1

6

r

Software Version

2

0x0A0D

1

8

r

Software Revision

1

0x0A0F

1

11

r

Chiller Unit Temperature Type

1

0x084B

1

12

r

Communication Status

1

0x040C

1

13

r

Compressor Lift Pressure

2

0x046A

2

15

r

Compressor Motor Current

2

0x044C

1

17

r

Compressor Motor Current Percent

1

0x044A

1

18

r

Compressor Number of Starts

2

0x085F

1

20

r

Compressor Operating Hours

2

0x0851

1

22

r

Compressor Suction Temperature

2

0x043A

3

24

r

Compressor Superheat - Discharge

2

0x046E

2

26

r

Compressor Superheat -Suction

2

0x046C

2

28

r

Condenser Approach Temperature

2

0x0484

2

30

r

Condenser Heat Recovery Unit Present

1

0x083F

1

31

r

Condenser Heat Recovery Temperature - Delta

2

0x048A

2

33

r

Condenser Heat Recovery Water Temp. - Entering

2

0x0454

3

35

r

Condenser Heat Recovery Water Temp. - Leaving

2

0x0456

3

37

r

Condenser Pump Status

1

0x0425

1

38

r

Condenser Pump # 1 Operating Hours

2

0x085A

1

40

r

Condenser Pump # 2 Operating Hours

2

0x085D

1

42

r

Condenser Refrigerant Pressure

2

0x0440

2

44

r

Condenser Refrigerant Temperature

2

0x0466

3

46

r

Condenser Subcooling Temperature

2

0x0480

2

48

r

Condenser Water Flow Rate

2

0x0452

1

50

r

Condenser Water Flow Status

1

0x045F

1

51

r

Condenser Water Rate Sensor

1

0x083D

1

52

r

Condenser Water Temperature - Delta

2

0x0488

2

54

r

Condenser Water Temperature - Entering

2

0x0436

3

Additional information may be obtained from McQuay International. Request the following document. MicroTech® Series 200 Centrifugal Chiller Data Communications Packet for Open Protocol™ Cent2_22.doc

5See Appendix A.1.

FieldServer Technologies 1991 Tarob Court Milpitas, California 95035 USA Web: www.fieldServer.com Tel: (408) 262 2299 Fax: (408) 262 2269 Toll Free: (888) 509 1970 email: support@fieldServer.com

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FieldServer FS-8700-80 instruction manual Equipment Type 200CFC 200 Series Centrifugal Chiller