QUANTUM
™
LX EVAPORATOR CONTROL PANEL
COMMUNICATIONS SETUP
090.610-CS (MAY 2016)
Page 105
COM-1 AND COM-2 DESCRIPTION
The board pictured on this page has two RS-422 serial
communications ports, labeled P10 (Com-1) and P11
(Com-2). They can be used for external communica-
tions 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) is labeled as P17 and is dedi-
cated to providing communications to the DIgital and
Analog boards, and will be explained in the section en-
titled Com-4 Description.
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 hardware pro-
tocol. 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 Interface board,
mounted below and to the right of the main con-
troller. In addition to external forms of serial com-
munication (to be discussed shortly), the keypad
also connects here:
Communications Ports on the Q5 Interface
COM-4
(RS-485)
(RS-485)
COM-2
RS-485)
Keypad
COM-1
(RS-422/
RS-485)
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