Serial Communications Hardware; General Description; Com-1 And Com-2 Description; Com-3 Description - Johnson Controls FRICK QUANTUM LX AcuAir Communications Manual

Q5 SERIAL COMMUNICATIONS HARDWARE
Q5 GENERAL DESCRIPTION
User connections for serial communications to
and from the Q5 are located on the Interface
board, and can use RS-422 and/or RS-485 hard-
ware protocol. These hardware protocols can be
connected via Com-3 and Com-4 for RS-485,
and Com-1 and Com-2 for RS-422/RS-485.
As mentioned in the previous paragraph, the
user connections for the serial communications
portion of the Q5 controller consists of an Inter-
face board, mounted below and to the right of
the main controller. In addition to external forms
of serial communication (to be discussed short-
ly), the keypad also connects here:
COM-4
(RS-485)
Keypad
C
ommunications Ports on the Q5 Interface
QUANTUM™ LX AcuAir™ CONTROL PANEL
COMMUNICATIONS SETUP
COM-3
(RS-485)
COM-2
(RS-422/
RS-485)
COM-1
(RS-422/
RS-485)
Board

COM-1 AND COM-2 DESCRIPTION

The board pictured on this page has two RS-422 se-
rial communications ports, labeled P10 (Com-1) and
P11 (Com-2). They can be used for external commu-
nications to the outside world.

COM-3 DESCRIPTION

Com-3 is labeled as P16 and is used for RS-422/RS-
485 hardware protocol, and can be used in addition
to any of the other communications ports that may
be being used.
COM-4 DESCRIPTION
Com-4 (RS-422/RS-485)
dedicated to providing communications to the DIgital
and Analog boards, and will be explained in the sec-
tion entitled Com-4 Description.
090.510-CS (DEC 2012)
Page 91
is labeled as P17 and is