Frick ® Protocol; Description; Frick® # Protocol Specifications - Johnson Controls FRICK QUANTUM HD Setup

Compressor control panel communications setup
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090.040-CS (JAN 14)
Page 18
FRICK
PROTOCOL
®

DESCRIPTION

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 commands can be in up-
per 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 Quantum™ HD.
FRICK® # PROTOCOL SPECIFICATIONS
Frick # protocol consists of commands that are
available for most other existing models of Frick
compressor control panels. The Frick # protocol
does not utilize a checksum. It is better to use
Frick Quantum™ ($) protocol when only com-
municating to Quantum™ panels.
When there is more than one panel, a Quan-
tum™ HD can be wired from its communications
ports to another panels' ports, or can be wired
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
8
5
4
QUANTUM™ HD COMPRESSOR CONTROL PANEL
COMMUNICATIONS SETUP
- TX (Transmit)
+ TX (Transmit)
- RX (Receive)
+ RX (Receive)
The following is a complete list of available Frick® Proto-
col # commands:
COMMAND CODE and DESCRIPTION
I
= Returns compressor status (I)nformation
R
= Compressor sta(R)t control
S
= Compressor (S)top control
A
= Return full load (A)mps information
V
= Slide (V)alve/Slide stop control
MC = Change (M)ode of (C)ompressor
MV = Change (M)ode of Slide (V)alve
P
= Return (P)ressures information
T
= Return (T)emperatures information
Q
= (Q)uery setpoints data
C
= Enter (C)hange setpoints mode
F
= Return (F)ailures
KF
= (K)Clear (F)ailures
KR
= (K)Clear remaining (R)ecycle delay time
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 charac-
ters 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 Tem-
perature 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 re-
turned 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.

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