
S90-510 CS (MAR 07) FRICK
®
QUANTUM™ LX AcuAir
®
CONTROL PANEL
Page 16
COMMUNICATIONS SETUP
PROTOCOL
The use of communication protocols permit data
transmission between devices. Protocols determines how
contact is established and how the query (question) and
response (answer) takes place. The information in a
message command requires an identity of the intended
receiver (ID #), what the receiver is to do (read or write to
a setpoint, etc.), data needed to perform an action (the
value of a setpoint to be changed), and a means of
checking for errors (checksum).
When using any of the communication ports, check what
communication protocol, if any has been selected, from
the Communications screen. The baud rate, data bits,
stop bits, parity and connection type of all comm. ports, as
well as the panel ID number are also changed from this
screen, and should coincide with the setup of the other
device.
Note: The data communication protocols are continuously
being expanded and improved. Therefore, you should
consult Frick
®
Controls for the exact details on your
particular unit(s) before developing system software to
interface with the panel.
Quantum™ Communications Protocols
The Quantum™ LX controller has the capability of
communicating to the outside world through the
following software protocols:
•
Frick
®
•
Modbus ASCII
•
Modbus RTU
•
Allen-Bradley
Checklist For Setting Up Communication
1.
Decide which Quantum™ protocol you can
communicate with and want to use.
2.
Setup your device’s communication port with the
proper parameters and select a baud rate.
3.
Next, setup the Quantum™ for the desired
communication protocol. Select the protocol from
the Communications screen.
4.
Setup the baud rate of the comm port to coincide
with the setup of your device’s communication
port.
5.
Enter the Quantum™ ID. This will be used to
identify commands that are sent to it.
6.
Wire to the first panel via RS-232, RS-422, or
RS-485 connections to the Quantum™ Comm
Port.
•
If you are communicating to more than one
panel, then you will not be able to use RS-
232. You can however, convert RS-232 to
either RS-422 or RS-485 with an adapter
card. Reference the Converting an RS-232
Serial Port to RS-422 or RS-485 section for
information about an adapter card.
•
Reference the drawing of the Quantum™
Main Board in this manual to identify wiring
and jumpering locations for the Comm Ports.
•
Reference the Main Board Communications
section in this manual for the correct
jumpering of RS-232, RS-422, or RS-485.
7.
Send a single command to read data from this
Quantum™ using its ID.
8.
Check if you received a data response at your
device.
9.
Troubleshooting when you don’t receive a data
response:
•
Check to see if the status of the Comm Port
on the Communications screen is showing
ACTIVE or OFF.
•
ACTIVE is shown only when the Quantum™
has received a properly composed
message..
•
Check that the RX2 I/O communication
activity lamp on the Quantum™ Main
Processor Board is blinking as it receives the
instruction from your device.
•
A steady lit RX2 LED or one that isn’t
lighting, are signs of improper wiring.
•
If the RX2 LED is properly blinking, then
check if the TX2 LED is blinking in response.
•
If the TX2 is not blinking then check the
communication protocol setup at the panel,
the panel’s ID and the comm port baud rate
setting.
•
If the TX2 is blinking, then check that the
Comm Port communication jumpers are
correct.
Note: A useful tool for troubleshooting is Windows
HyperTerminal. Using HyperTerminal can help you
determine if the system is are wired properly.
Reference the HyperTerminal Setup section in this
manual.
1
If you properly receive data and you need to
communicate to more than one panel, then setup
and wire to another panel. Reference the wiring
diagram drawings in the back of this manual.
Send a single command to read data from this
Quantum™ using it’s ID and troubleshoot as
above, if necessary. To prevent noise feedback
which is possible when communicating over a
long distance, only the last panel should have the
termination for long communications lines
jumpered.