RWB II PLUS MICROPROCESSOR CONTROL
OPERATION
S70-200 OM
Page 18
QUERY SETPOINTS DATA - #IDQ2 will return
Pos
# Byte(s) Setpoint (Name/Comment)
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
Ctf
16,17
2
Recycle delay (setpoint, not
time left)
18
1
Aux 1 0=alarm, 1=shutdown
19
1
Aux 1 0=NO, 1=NC
20
1
Aux 2 0=alarm, 1=-shutdown
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
Checksum of all data (pos. 1
to 31)
33
1
CR code 13
34
1
LF code 10
35
1
0 null terminator char.
QUERY SETPOINTS DATA - #IDQ3 will return
Pos
# Byte(s) Setpoint (Name/Comment)
1,2,3,4
4
Setback setpoint
5,6,7,8
4
Future
9
1
Setback active 1=yes, 0=no
10,11,12,13 4
Autocycle comp. start
14,15,16,17 4
Autocycle comp. stop
18,19
2
Future
20,21
2
Future
22,23
2
Autocycle min. sv.
24
1
Autocycle active 1=yes, 0=no
25,26,27,28 4
Future
29,30,31,32 4
Future
33,34
2
Future
35,36
2
Future
37,38
2
Future
39
1
Future
40
1
ID (tenths position byte)
41
1
ID (ones position byte)
42
1
Checksum of all data (pos. 1
to 41)
43
1
CR code 13
44
1
LF code 10
45
1
0 null terminator char.
CHANGE SETPOINTS COMMAND: #01C
# Start command sequence.
01 Compressor ID code.
C Change setpoint command.
xxx New setpoint
xx New setpoint
y g or h for gauge or inches
The following is the complete list of the
setpoints that may be changed while in the
change setpoints command:
01xxxy Capacity Control Setpoint
("y" deleted for KpaA & BarA ver.)
02xxxy Change Low Pressure Cutout Setpoint.
("y" deleted for KpaA & BarA ver.)
03xxxy Change Low Pressure Alarm Setpoint.
("y" deleted for KpaA & BarA ver.)
04xxx
Change High Pressure Cutout Setpoint.
("xxxx" is used for KpaA & BarA ver.)
05xxx
Change High Pressure Alarm Setpoint.
("xxxx" is used for KpaA & BarA ver.)
06xxx
Change MLC Stop Load Setpoint.
07xxx
Change MLC Force Unload Setpoint.
08xx
Change Recycle Delay Setpoint.
09xxx
Change CTF Setpoint.
10xx
Proportional Band (PB)
11xx
Dead Band (DB)
12xx
Cycle Time (CT)
01
Compressor ID code.
PB 02, 05, 10, 15, 20, 25
DB 05, 10, 15, 20, 25, 30, 35, 40, 45, 50,
(decimal is assumed i.e. 01 = 0.1)
CT 05, 10, 15, 20, 25, 30
RETURNED ANSWER:
Axxxx
The new setpoint which was sent
followed by a carriage return,
line feed.
“BAD” followed by the “ID”, “CR”,“LF”
if unsuccessful.
If the command was sent #01C01300g01, the
capcity control setpoint would be changed to
30.0g and the returned answer is A300g
followed by a carriage return, line feed.
If the command sent was #01C0711001, the MLC
force unload setpoint would be changed to 110%
and the returned answer is A110 followed by
a carriage return, line feed.
If the command sent was #01C0520002, the
returned answer is “BAD” followed by the ID
number and a carriage return, line feed.
g or h must be lower case - exception to "All commands
must be caps" statement at beginning of section.
