
S90-510 CS (MAR 07) FRICK
®
QUANTUM™ LX AcuAir
®
CONTROL PANEL
Page 82
COMMUNICATIONS SETUP
RS-485 WIRING AND JUMPERS
The following table describes the Quantum™ RS-485
connector pinouts and their associated communications
signals:
TABLE 10: RS-422 (TB1) Communications Signal
Wiring
TB1 Connector Pin #
Signal
2
+TX / +RX
1
-TX / -RX
TB1, COM-1
The following pictorial shows the communications board,
as well as the jumpers, LED’s and signal pinouts to allow
the end user to communicate to Com-1 (TB1) using RS-
485 protocol. Refer to Tables 10 and 11 for the specifics
on the jumper settings and wiring convention for RS-485.
Com-1 Connector, Jumpers and LED Location
TABLE 11: RS-485 (TB1) Communications Board
Jumpers
LINK POSITION FUNCTION
LK2
In
Out*
Terminate COM1
No termination
RS-485
LK7
In
Out*
Pull down COM1
No pull down
RS-485
(-TX / -RX)
LK8
In
Out*
Pull up COM1
No pull up
RS-485
(+TX / +RX)
Lk11
A
B*
Select RS-232 for COM2 (TB3)
Select RS-485 for COM2 (TB2)
LK16
A
B *
COM1 RS-422 (TB1)
COM1 RS-485 (TB1)
* Standard Setting
TB2, COM-2
The following pictorial shows the communications board,
as well as the jumpers, LED’s and signal pinouts to allow
the end user to communicate to Com-2 (TB2) using RS-
485 protocol. Refer to Tables 10 and 12 for the specifics
on the jumper settings and wiring convention for RS-485.
Com-2 Connector, Jumpers and LED Location
TABLE 12: RS-485 (TB2) Communications Board
Jumpers
LINK POSITION FUNCTION
LK 1
In
Out*
Terminate COM2
No termination
RS-485
LK 3
In
Out*
Pull down COM2
No pull down
RS-485
(-TX / -RX)
LK 4
In
Out*
Pull up COM2
No pull up
RS-485
(+TX / +RX)
LK 11
A
B*
Select RS-232 for COM2 (TB3)
Select RS-422 for COM2 (TB2)
LK 17
A *
B
COM2 RS-422 (TB2)
COM2 RS-485 (TB2)
* Standard Setting
LK1
LK4
LK3
D
8
D
10
D
11
D
12
PORT
80H
D
13
0
1
2
3
4
5
6
7
D6
Jumpers
LK11
B A
LK2
TB1
TB2
KB
D8
D1
LK6
LK5
LK17
A B
D3
Transmit Data
(TX) LED
Receive Data
(RX) LED
COM-1
COM-2
PL2
SW1
ON
1
2
3 4
5
6
7 8
PL3
1
2
3
4
COM-2
TB3
3
2
1
PL1
1
2
3
4
RS-
485
Com-1 (TB1)
RS-485
Connector
LK10
LK9
LK7
LK8
LK16
A B
D2
+TX/+RX
-TX/-RX
D6
TB2
Receive Data
(RX) LED
D
8
D
10
D
11
D
12
PORT
80H
D
13
0
1
2
3
4
5
6
7
COM-1
COM-2
PL2
SW1
ON
1
2
3 4
5
6
7 8
PL3
1
2
3
4
RS-
485
COM-2
TB3
3
2
1
PL1
1
2
3
4
TB1
D3
D2
LK10
LK9
LK16
A B
LK7
LK8
LK2
A B
KB
D8
Jumpers
D1
LK1
LK4
LK3
LK6
LK5
LK17
LK11
B A
Transmit Data
(TX) LED
+TX/+RX
Com-2 (TB2)
RS-485
Connector