RWB II PLUS MICROPROCESSOR CONTROL
OPERATION
S70-200 OM
Page 17
COMPRESSOR DISPLAY SCREENS COMMAND: #01DXN
# Start command sequence.
01 Compressor ID code.
D Compressor control command.
X = 0 Operating display.
X = S Adjustable setpoints display.
X = D2 Adjustable setpoints Page 2.
X = X Fixed setpoints display.
X = R Shutdown record display.
X = F Freeze display.
X = C Autocycle display.
X = P Security display.
X = B Setback display.
X = + Analog offset display.
X = AN Annunciator display page “N”
N = 1 Display page #1. NOTE: “N” para-
N = 2 Display page #2. meter uses to
N = 3 Display page #3. access annunci-
N = 4 Display page #4. ator pages.
If the command was #01DA1, then the micro-
processor would dump the annunciator display
page number one. Display dumps consist of
336 characters each.
RETURN PRESSURES COMMAND: #01PX
# Start command sequence.
01 Compressor ID code.
P Return pressures command.
X = S Return suction pressure (PSIA).
X = D Return discharge pressure (g/hg).
X = O Return oil pressure (g).
X = F Return filter differential pressure.
X = A Return all pressures.
If the command was #01PS, then the micro-
processor would dump the suction pressure.
RETURNED ANSWER
XXX = 3 characters followed by a carriage
return, line feed.
If using the “A” command, then the returned
data would be:
XXXXXXXXXXXX = 12 characters followed by a
carriage return, line feed.
RETURN FULL LOAD AMPS COMMAND: #01A
# Start command sequence.
01 Compressor ID code.
A Return full load amps command.
If the command was #01A, then the micro
processor would dump the full load amps value.
RETURNED ANSWER:
XXX = 3 characters followed by a carriage
return, line feed.
RETURN TEMPERATURES COMMAND: #01TX
# Start command sequence.
01 Compressor ID code.
T Return temperature command.
X = S Return suction temperature.
X = D Return discharge temperature.
X = O Return oil temperature.
X = P Return separator temperature.
X = A Return all temperatures as a string
of data.
If the command was #01TS, then the micro-
processor would dump the suction temperature.
RETURNED ANSWER:
XXX = 3 characters followed by a carriage
return, line feed.
If using the “A” command, then the returned
data would be:
XXXXXXXXXXXXX = 13 characters followed by a
carriage return, line feed.
NOTE: The “S” command will return four (4)
characters followed by a carriage return, a
line feed and “+ or - .xxx”.
QUERY SETPOINTS DATA - #IDQ1 will return
Pos # Byte(s) Setpoint (Name/Comment)
1 1 Always “O”
2,3,4,5 4 Ccsp. 3 chars followed by g
or h
6,7,8,9 4 Low suct. press. cutout. 3
chars followed by g or h
10,11,12,13 4 Low suct. press. alarm. 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 Hpco
42,43,44,45 4 Hpa
46 1 ID (tenths position byte)
47 1 ID (ones position byte)
48 1 Checksum of all data (pos. 1
to 47)
49 1 CR code 13
50 1 LF code 10
51 1 O null terminator char.
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