FRICK
®
QUANTUM™ COMPRESSOR CONTROL PANEL S90-010 CS (APR 08)
COMMUNICATIONS SETUP Page 11
Frick
®
Protocols
All commands for Frick
®
protocols must be in ASCII to be
recognized (see the Conversion Chart For Decimal /
Hexadecimal / ASCII, located later in this manual). The
data should be setup as an 8 bit Word with no Parity, and
a Stop Bit. The commands can be in upper or lower case
letters. A compressor with an ID code of
[00]
is considered
disabled. ID codes from
[01]
through
[99]
are valid and
recognized by the microprocessor.
Frick
®
#
Protocol Specifications
Frick
®
#
protocol consists of commands that are available
for most other existing models of Frick control panels. The
Frick
®
#
protocol does not utilize a checksum. It is better to
use Frick
®
Quantum™ (
$
) protocol when only
communicating to Quantum™ panels.
When there is more than one panel, a Quantum™ can be
wired from it’s Com-2 to another panels Com-2 or can be
wired from it’s Com-2 to Port 1 of a RWB, RDB, RXB or
RXF Micro Plus panel.
Frick
®
RWB, RDB, RXB, or RXF Panel Frick
®
#
Communications Port #1
RS-422 Pinout
9 - TX (Transmit)
8 + TX (Transmit)
5 - RX (Receive)
4 + RX (Receive)
The following is a complete list of available Frick
®
Protocol
#
commands:
COMMAND CODE and DESCRIPTION
I = Returns compressor status information.
R = Compressor start control.
S = Compressor stop control.
V = Slide Valve/Slide stop control.
P = Return Pressures information.
A = Return full load amps information.
T = Return Temperatures information.
Q = Query setpoints data.
C = Enter Change setpoints mode.
MC = Change compressor mode.
MV = Change Slide Valve mode.
KF = Clear Failures.
KR = Clear remaining recycle delay time.
X = Return digital I/O status.
F = Return Failures.
All data is returned as integer values. If decimal positions
are assumed, then divide the data by the proper multiple
of 10 to get the actual value.
Temperature data, except for Suction Temperature, is
returned in the current temperature units as 3 characters
with no decimal position (i.e. 032 would represent 32
degrees Fahrenheit if the panel temperature units are in
Fahrenheit, or it would represent 32 degrees Celsius, if the
panel temperature units are in Celsius). Suction
Temperature is returned as 4 characters with a
+
or
-
as
the leading character (i.e. –010 would represent –10
degree).
Pressure data is usually returned in the current pressure
units. However, the Filter differential reading is always
returned in PSIA. When in PSIG or in PSIA, the pressure
data is returned as 3 characters with no decimal position.
However; in order to show the full transducer range, the
#IDPS command returns 4 characters with one decimal
position assumed. The #IDI, and #IDPA commands return
3 characters that assume one decimal position; therefore,
99.9 is the highest value that can be returned. When in
PSIG, suction pressure is returned in PSIA. When in Bar
and BarA, the pressure data is returned as 4 characters
with two decimal positions assumed. When in KpaA, the
pressure data is returned as 4 characters with no decimal
position.
The following is a detailed description of each command:
RETURN COMPRESSOR STATUS INFO: #01I
# Start of command sequence.
01 Compressor ID code.
I Return Status information command.
RETURNED ANSWER, ie: 090RRRN340
Character
Position
Description
of returned data
1, 2, 3
Slide Valve position.
4
R
emote,
A
uto,
M
anual (Slide Valve)
5
D
elay-recycle,
R
unning,
O
ff,
S
lide Valve
too high,
P
ermissive Start not enabled,
d(
I
)fferential Pressure too high, s(
T
)opping,
au(
X
) not energized
6
R
em,
M
Keypad,
A
uto (Compressor mode)
7
C
utout (Shutdown),
A
larm,
N
ormal
8, 9, 10
Suction in PSIA.
(Carriage return, line feed.)
Note:
The following control commands are for remote
control of a compressor. A compressor should be in both
remote compressor mode and remote Slide Valve or
capacity mode for remote control.
COMPRESSOR START CONTROL: #01R01
# Start command sequence.
01 Compressor ID code.
R Start compressor command.
01 ID code repeated for verification
NOTE: The compressor must be in the remote Start
mode for this command to be executed.
Returned answer: A01
Character
Position
Description
of returned data
1
Acknowledge of command sent.
2, 3
ID code of compressor.
(Carriage return, line feed.)
