AERCO Modulex E8 Controls Guide - Manual (Page 71)

PR1: 11/30/12 Page 71 of 112
GF-115-C Modulex E8 Controller and BCM
Operations and Maintenance Manual
OMM-0084_0D
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526- 0288
TO OTHER NETWORK BOILER SLAVES
(3
- 9
)
AERCO BMS II
MASTER
485
B
+
485
A
-
RS485 PORT
SHLD
(TERM
3)
+
Y
2-
2
– MODBUS “A”
(-
)
(PART OF BCM CONN
. Y
2)
MODULEX BOILER SLAVE
#1
NOTES
:
THE LAST BCM SLAVE ON THE RS
485
LOOP
MUST HAVE ITS TERMINATION RESISTOR ENABLED
.
ALSO
,
THE
2
BIAS DIP SWITCHES IN THE BMS II
SHOULD BE TURNED ON
,
Y
2-
1
– MODBUS “B”
(+)
BCM
+
Y
2-
2
– MODBUS “A”
(-
)
(PART OF BCM CONN
. Y
2)
MODULEX BOILER SLAVE
#2
Y
2-
1
– MODBUS “B”
(+)
BCM
RS232 PORT
BIAS DIP
SWITCHES
(2
)
SET BOTH
SWITCHES TO “ON”
Figure
7-
10
.
AERCO BMS II Master Controlling Modulex Boiler Slaves
Fi
gur
e
7-
10: