Frick QUANTUM LX Control Panel, Service Manual

Page: 115 / 132

QUANTUM ™ LX EVAPORATOR CONTROL PANEL
COMMUNICATIONS SETUP
090.610-CS (MAY 2016)
Page 115
RS-422 WIRING AND JUMPERS
The following table describes the RS-422 connec-
tor pinouts and their associated communications
signals:
RS-422 (TB1) Signal Wiring
TB1 Connector Pin # Signal
4 TX+
3 TX-
2 RX+
1 RX-
COM-1 (TB1)
The following pictorial shows the communi-
cations board, as well as the jumpers, LED’s
and signal pinouts to allow the end user to
communicate to Com-1 (TB1) using RS-422
protocol. Refer to the tables in this section
for the specifics on the jumper settings and
wiring convention for RS-422:
LK1
LK4
LK3
D
8
D
10
D
11
D
12
PORT
80H
D
13
0 1 2 3 4 5 6 7
D6
TB1
TB2
+TX
-TX
+RX
-RX
KB
D8
D3
D2
Transmit Data
(TX) LED
Receive Data
(RX) LED
Jumpers
D1
LK6
LK5
LK17
A B
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-
422
Com-1 (TB1)
RS-422
Connector
LK11
B A
LK10
LK9
LK16
A B
LK7
LK8
LK2
RS-422 Com-1 (TB1) Connector, Jumpers and LED Location
RS-422 (TB1) Board Jumpers
LINK POSITION FUNCTION
LK2
In
Out*
Terminate COM1
No termination
RS-422
LK7
In
Out*
Pull down COM1
No pull down RS-422
(-RX)
LK8
In
Out*
Pull up COM1
No pull up RS-422
(+RX)
LK9
In
Out*
Pull down COM1
No pull down RS-422
(-TX)
LK10
In
Out*
Pull up COM1
No pull up RS-422
(+TX)
LK16
A *
B
COM1 RS-422 (TB1)
COM1 RS-485 (TB1)
* Standard Setting
COM-2 (TB2)
The following pictorial shows the communi-
cations board, as well as the jumpers, LED’s
and signal pinouts to allow the end user to
communicate to Com-2 (TB2) using RS-422
protocol. Refer to the tables in this section
for the specifics on the jumper settings and
wiring convention for RS-422:
KB
D8
TB2
+TX
-TX
+RX
-RX
Com-2 (TB2) RS-
422 Connector
D
8
D
10
D
11
LK2
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-
422
COM-2
TB3
3 2 1
PL1
1
2
3
4
TB1
D3
D2
LK10
LK9
LK16
A B
LK7
LK8
LK1
LK4
LK3
A
LK6
LK5
LK17
B
Receive Data
(RX) LED
D6
LK11
B A
D1
Transmit Data (TX)
LED
Jumpers
RS-422 Com-2 (TB2) Connector, Jumpers and LED
Location
RS-422 (TB2) Board Jumpers
LINK POSITION FUNCTION
LK 1
In
Out*
Terminate COM2
No termination
RS-422
LK 3
In
Out*
Pull down COM2
No pull down
RS-422 (Rx-)
LK 4
In
Out*
Pull up COM2
No pull up
RS-422 (Rx+)
LK 5
In
Out*
Pull down COM2
No pull down
RS-422 (Tx-)
LK 6
In
Out*
Pull up COM2
No pull up
RS-422 (Tx+)
LK
11
A
B*
Select RS-232 for COM2 (TB3)
Select RS-422 for COM2 (TB2)
LK
17
A * COM2 RS-422 (TB2)
B COM2 RS-485 (TB2)
* Standard Setting