Johnson Controls QUANTUM LX, Setup

Page: 23 / 140

QUANTUM™ LX COMPRESSOR CONTROL PANEL
COMMUNICATIONS SETUP
090.020-CS (JUNE 11)
Page 23
QUERY SETPOINTS DATA: #IDQ1
Command structure:
Command Description
# Start command sequence
ID Compressor (ID) code (01, 14, etc.)
Q1 (Q) uery Setpoints command
Returned Answer:
Character
Position
#
Byte(s)
Setpoint (Name/Comment)
1 1 Always 0
2, 3, 4, 5 4
Capacity Control Setpoint, 3
chars followed by g or h
14, 15 2 Prop band
16, 17 2 Dead band
18, 19 2 Cycle time
20, 21, 22, 23 4 Future
24, 25, 26, 27 4 Future
28, 29, 30, 31 4 Future
32, 33 2 Future
34, 35 2 Future
36, 37 2 Future
38, 39, 40, 41 4
High Discharge Pressure
Shutdown
42, 43, 44, 45 4
High Discharge Pressure
Warning
46 1 ID (tenths position byte)
47 1 ID (ones position byte)
48 1
ID Checksum of all data (pos.
1 to 47)
49 1 CR code 13
50 1 LF code 10
51 1 0 null terminator char.
QUERY SETPOINTS DATA: #IDQ2
Command structure:
Command Description
# Start command sequence
ID Compressor (ID) code (01, 14, etc.)
Q2 (Q) uery Setpoints command
Returned Answer:
Character
Position
# Byte(s)
Setpoint (Name/Com-
ment)
1, 2, 3 3 Future
4, 5, 6 3 Future
7, 8, 9 3 MLC amps stop load
10, 11, 12 3 MLC amps force unload
13, 14, 15 3 CT factor
16, 17 2 Recycle delay (setpoint,
not time left)
18 1 Aux 1
0 =
Warning
1 =
Shut-
down
19 1 Aux 1
0 = NO
1 = NC
20 1 Aux 2
0 =
Warning
1 =
Shut-
down
21 1 Aux 2
0 = NO
1 = NC
22 1 Future
23, 24 2 Future
25 1 Future
26 1 Future
27, 28 2 Future
29 1 Future
30 1 ID (tenths position byte)
31 1 ID (ones position byte)
32 1
ID Checksum of all data
(pos. 1 to 47)
33 1 CR code 13
34 1 LF code 10
35 1 0 null terminator char.