Frick QUANTUM LX - COMMUNICATIONS LOOPBACK TEST

QUANTUM
™
LX EVAPORATOR CONTROL PANEL
COMMUNICATIONS SETUP
090.610-CS (MAY 2016)
Page 120
COMMUNICATIONS LOOPBACK TEST
DESCRIPTION
NOTE: Communications Loopback testing is not
yet available for the Q5.
The purpose of this section is to verify the proper
operation of the following communications ports:
Comms 1 (TB1) and 2 (TB2) - RS-422
Comms 1 (TB1) and 2 (TB2) - RS-485
Comms 2 (TB2) and 3 (PL6) – RS-232
By utilizing a loopback test harness (as shown on
the following pages), the technician has the abil-
ity to locally test the Quantum™ communications
hardware and jumper conguration.
HARDWARE SETUP FOR TESTING RS-232
To create the communications loopback harness
for RS-232 testing, use the following example(s):
Q4 RS-232 Test Harness
Set the communications jumpers as follows:
• Set LK11 to position A
• Plug the RS-232 test harness (as shown
above) into the Com ports at TB3 and
PL6.
LK10
LK9
D3
D1
COM2 (TX)
Flash Card Socket
(Located under
board)
PL6
LK11
B
A
D6
COM2 (RX)
LK16
A
B
LK7
D2
LK8
PL3
PL4
PL11
PL15
LK4
LK3
PL5
COM-2
RS-232
3
2
1
KB
D8
PL1
PL2
SW1
ON
1 2 3 4 5 6 7 8
0
1
2 3 4 5 6 7
RS-422
RS-485
1
2
3
4
COM-1
LK6
B
A
LK5
LK7
LK6
LK4
LK1
LK3
LK17
LK5
A
B
1
2
3
4
RS-
422
RS-
485
TB1
TB2
LK2
LK1
PL3
PL4
LK2
PL1
PL8
PL7
PL9
PL13
PL12
PWR
SUSP
FLASH
LK12
LK11
PL24
PL18
PL19
PL17
LK8
LK9
LK10
PL16
PL10
PL14
TB3
Verify that
LK11 is set to A
position.
B
A
Com-2 (TB3) & Com-3 (PL6) RS-232 Connector &
Jumper Location
TX
RX
COM
TX
RX
COM
3-Pin Connector
10-Pin Connector
1
9
3
5
7
2
10
4
6
8
1
3
HARDWARE SETUP FOR TESTING RS-422
To create the communications loopback harness
for RS-422 testing, use the following example(s):
Q4 RS-422 Test Harness
Set the communications jumpers as follows:
1. Set LK11 to position B
2. Set LK16 to position A
3. Set LK17 to position A
4. Plug the RS-422 test harness (as shown
above) into the com ports at TB1 and TB2
as shown here:
LK8
LK10
LK9
LK7
LK2
LK1
LK4
LK3
LK6
LK5
Verify
the jumpers in
these locations
LK17
A
B
LK11
B
A
LK16
A
B
1
2
3
COM-2
RS-232
TB3
D8
D1
D6
D2
D3
PL2
SW1
TB2
1
2
3
4
COM-2
RS-422/RS-485
TB1
1
2
3
4
COM-1
RS-422/RS-485
Q4 RS-422 Test Conguration
4-Pin Connector
4
1
-TX
+TX
+RX
-RX
+RX
-RX
-TX
+TX
1
4
4-Pin Connector