AERCO XPC GATEWAY Communications - Manual (Page 54)

GATEWAY COMMUNICATIONS MANUAL
54
NOTE:
PORT 1a CONNECTIONS WILL DEPEND ON THE
AVAILABLE PORTS ON THE BAS BEING USED.
IF THE BAS CONTAINS A 4-WIRE RS485 PORT, SEE
DETAIL “A”.
IF THE BAS CONTAINS ONLY A RS232 PORT, A
RS485-TO-RS232 CONVERTER WILL BE REQUIRED.
RXD
TXD
GND
+(B)
-(A)
SHLD
TO C-MORE
BOILERS
CONTROLLED
VIA RS485
NETWORK
BMS
JP11 JP12
RS232
XPC GATEWAY
PORT
1a
NET +
NET -
SHLD
TX
DTR
DCD
GND
EIA-232
EIA-485
2W
4W
TO BAS
(SEE NOTE)
PORT
2
RX
RS485
T+
R-
R+
T-
SHIELD
4-WIR
E RS
485
POR
T
DETAIL “A”
BMS CONNECTED TO XPC PORT 2
Figure 3-8. BMS Sample Network Diagrams (Sheet 1 of 2)
NOTE:
PORT 2 CONNECTIONS AND JUMPER POSITIONS
WILL DEPEND ON THE AVAILABLE PORTS ON THE
BAS BEING USED. SEE DETAIL “A”.
XPC GATEWAY
PORT
1a
NET +
NET -
SHLD
EIA-232
EIA-485
2W
4W
TO BAS
(SEE NOTE)
PORT
2
S
EE N
OTE
JUMPERS
RS485-TO- RS232
CONVERTER
RXD
TXD
GND
+(B)
-(A)
SHLD
TO C-MORE
BOILERS
CONTROLLED
VIA RS485
NETWORK
BMS
JP11 JP12
RS232 RS485
2W 4W 232
Net +
Net -
N/C
N/C
Tx + Tx
Tx - Rx
DTR
Rx - DCD
SIGNAL GROUND
Rx +
Port 2
DETAIL “A”
B+
A-
GND
RXD
TXD
GND
+12V
SEE CONVERTER
INSTRUCTIONS
(124958)
BMS CONNECTED TO XPC PORT 1a
Figure 3-8. BMS Sample Network Diagrams (Sheet 2 of 2)