AERCO XPC GATEWAY Communications - Manual (Page 46)

GATEWAY COMMUNICATIONS MANUAL
46
NOTES:
1. PORT 2 CONNECTIONS AND JUMPER POSITIONS
WILL DEPEND ON THE AVAILABLE PORTS ON THE
BAS BEING USED. SEE DETAIL “A”.
2. THE LAST C-MORE BOILER ON THE RS485 LOOP
MUST HAVE ITS TERMINATION RESISTOR (TERM)
TURNED ON. ALSO, BIAS (BIAS1, BIAS2) MAY BE
REQUIRED. CHECK WITH THE BAS MANUFACTURER.
+
-
RS485
COMM
(P/O I/O BOX)
C-MORE
NETWORK BOILER 1
-
+ RS485
COMM
P/O I/O BOX
C-MORE
NETWORK BOILER 2
TO OTHER NETWORK
BOILERS
(SEE NOTE 2)
XPC GATEWAY
PORT
1a
NET +
NET -
SHLD
EIA-232
EIA-485
2W
4W
TO BAS
(SEE NOTES)
PORT
2
S
EE N
OTE
1
JUMPERS
2W 4W 232
Net +
Net -
N/C
N/C
Tx + Tx
Tx - Rx
DTR
Rx - DCD
SIGNAL GROUND
Rx +
Port 2
DETAIL “A”
C-MOREs CONNECTED TO XPC PORT 1a
Figure 2-9. C-More Controller Sample Network Diagrams (Sheet 2 of 2)