McQuay WSC Operating Manual page 14

Table 9, pLAN address and DIP Switch Settings for Controllers Using pLAN.
Chiller
(1)
Dec.
A
Bin.
Dec.
B
Bin.
Dec.
C
Bin.
Dec.
D
Bin.
NOTES for pLAN multi-chiller communication setup:
1. Up to four single or dual compressors can be interconnected.
2. Operator Interface Touch Screen (OITS) setting is not a DIP switch setting. The OITS address is selected
by selecting the 'service' set screen. Then, with the Technician level password active, select the 'pLAN
Comm' button. Buttons A(7), B(15), C(23), D(31) will appear in the middle of the screen, then select the
letters for the OITS address for the chiller that it is on. Then close the screen. Note that A is the default
setting from the factory.
3. For the pCo2 controller, the pLAN address can be confirmed by viewing the DIP switch positions and
comparing to
Table 9
(see picture below)
4. For the pCo3 controller, there are no DIP switches as shown below.
14
Comp 1 Comp 2
Controller Controller
1 2
100000 010000
9 10
100100 010100
17 18
100010 010010
25 26
100110 010110
(Bin. rows). Up is 'On', indicated by '1'. Down is 'Off', indicated by '0'.Operation.
Unit Reserved
Controller
5 6
101000 011000
13 14
101100 011100
21 22
101010 011010
29 30
101110 011110
Operator Reserved
Interface (2)
7 8
N/A 000100
15 16
N/A 000010
23 24
N/A 000110
31 32
N/A 000001
OM Centrif Micro ΙΙ-5