Aerco E8 - Page 72

06/05/13 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 • Ph: 800-526- 0288 Page 72 of 112
GF-115-C
Modulex E8 Controller and BCM
Operations and Maintenance Manual
OMM-0084_0D
TO OTHER NETWORK
BOILER SLAVES (3 - 9)
AERCO BMS II
MASTER
485 B +
485 A -
RS485 PORT
SHLD
(TERM 3)
+
Y2-2 – MODBUS “A” (-)
(PART OF BCM CONN. Y2)
MODULEX BOILER SLAVE #1
NOTES: THE LAST BCM SLAVE ON THE RS485 LOOP
MUST HAVE ITS TERMINATION RESISTOR ENABLED.
ALSO, THE 2 BIAS DIP SWITCHES IN THE BMS II SHOULD BE TURNED ON,
Y2-1 – MODBUS “B” (+)
BCM
+
Y2-2 – MODBUS “A” (-)
(PART OF BCM CONN. Y2)
MODULEX BOILER SLAVE #2
Y2-1 – 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
Figure 7-10: